A
- A1C
- AAA see Aortic Aneurysm
- Abdominal Aortic Aneurysm see Aortic Aneurysm
- Abdominal Pain
- Abdominal Pregnancy see Ectopic Pregnancy
- Abnormalities see Birth Defects
- ABO Blood Groups see Blood
- Abortion
- About Your Medicines see Medicines; Over-the-Counter Medicines
- ABPA see Aspergillosis
- Abscess
- Abuse see Child Abuse; Elder Abuse; Intimate Partner Violence
- Accident Prevention see Safety
- Accidents see Falls; First Aid; Wounds and Injuries
- Achalasia see Esophagus Disorders
- Achilles Tendon Injuries see Heel Injuries and Disorders
- Achondroplasia see Dwarfism
- Acid Reflux see GERD; Heartburn
- ACL Injuries see Knee Injuries and Disorders
- Acne
- Acne Rosacea see Rosacea
- Acoustic Neuroma
- Acquired Immunodeficiency Syndrome see HIV
- Acromegaly see Growth Disorders; Pituitary Disorders
- Actinic Keratosis see Skin Cancer; Sun Exposure
- Acupuncture
- Acute Bronchitis
- Acute Flaccid Myelitis
- Acute Lymphoblastic Leukemia see Acute Lymphocytic Leukemia
- Acute Lymphocytic Leukemia
- Acute Myeloblastic Leukemia see Acute Myeloid Leukemia
- Acute Myeloid Leukemia
- Acute Pancreatitis see Pancreatitis
- Acute Respiratory Distress Syndrome see Respiratory Failure
- ADD see Attention Deficit Hyperactivity Disorder
- Addison Disease
- Adenoidectomy see Adenoids
- Adenoids
- Adenoma see Benign Tumors
- Adenomyosis see Endometriosis
- Adenovirus Infections see Viral Infections
- ADHD see Attention Deficit Hyperactivity Disorder
- Adhesions
- Adolescent Development see Teen Development
- Adolescent Health see Teen Health
- Adolescent Pregnancy see Teenage Pregnancy
- Adrenal Gland Cancer
- Adrenal Gland Disorders
- Adrenal Insufficiency see Addison Disease
- Adrenoleukodystrophy see Leukodystrophies
- Adult Immunization see Vaccines
- Advance Directives
- AF see Atrial Fibrillation
- Affordable Care Act see Health Insurance
- After Surgery
- Age-Related Macular Degeneration see Macular Degeneration
- Agent Orange see Veterans and Military Health
- Ageusia see Taste and Smell Disorders
- Aging see Older Adult Health
- Aging Skin see Skin Aging
- Agoraphobia see Phobias
- AIDS see HIV
- AIDS and Infections see HIV and Infections
- AIDS and Pregnancy see HIV and Pregnancy
- AIDS in Women see HIV in Women
- AIDS Medicines see HIV Medicines
- AIDS--Living With AIDS see Living with HIV
- Air Pollution
- Airsickness see Motion Sickness
- Alagille Syndrome see Liver Diseases
- Alaska Native Health see American Indian and Alaska Native Health
- Alcohol
- Alcohol Abuse see Alcohol Use Disorder (AUD)
- Alcohol Abuse in Pregnancy see Pregnancy and Substance Use
- Alcohol and Youth see Underage Drinking
- Alcohol Consumption see Alcohol
- Alcohol Dependence see Alcohol Use Disorder (AUD)
- Alcohol Use Disorder (AUD)
- Alcohol Use Disorder (AUD) Treatment
- Alcohol Withdrawal see Alcohol Use Disorder (AUD)
- Alcoholic Fatty Liver Disease see Fatty Liver Disease
- Alcoholism see Alcohol Use Disorder (AUD)
- ALL see Acute Lymphocytic Leukemia
- Allergic Bronchopulmonary Aspergillosis see Aspergillosis
- Allergic Rhinitis see Allergy; Hay Fever
- Allergy
- Allergy, Food see Food Allergy
- Allergy, Latex see Latex Allergy
- Alopecia see Hair Loss
- Alpha-1 Antitrypsin Deficiency
- Alpha-tocopherol see Vitamin E
- ALS see Amyotrophic Lateral Sclerosis
- Alternative Medicine see Complementary and Integrative Medicine
- Alternative Therapy for Cancer see Cancer Alternative Therapies
- Alzheimer's Caregivers
- Alzheimer's Disease
- Amblyopia
- AMD see Macular Degeneration
- Amenorrhea see Menstruation
- American Indian and Alaska Native Health
- American Indian Health see American Indian and Alaska Native Health
- Amino Acid Metabolism Disorders
- AML see Acute Myeloid Leukemia
- Amnesia see Memory
- Amniocentesis see Prenatal Testing
- Amphetamines see Club Drugs; Methamphetamine
- Amputation see Artificial Limbs; Limb Loss
- Amyloidosis
- Amyotrophic Lateral Sclerosis
- Anabolic Steroids
- Anal Cancer
- Anal Disorders
- Analgesics see Pain Relievers
- Anaphylaxis
- Anaplasmosis see Tick Bites
- Anatomy
- Anemia
- Anencephaly see Neural Tube Defects
- Anesthesia
- Aneurysms
- Angiitis see Vasculitis
- Angina
- Angioplasty
- Animal Bites
- Animal Diseases and Your Health
- Animal Health see Animal Diseases and Your Health; Pet Health
- Ankle Injuries and Disorders
- Ankylosing Spondylitis
- Annual Physical Examination see Health Checkup
- Anorexia Nervosa see Eating Disorders
- Anosmia see Taste and Smell Disorders
- Anterior Cruciate Ligament Injury see Knee Injuries and Disorders
- Anthrax
- Anti-platelet drugs see Blood Thinners
- Antibiotic Resistance
- Antibiotics
- Anticoagulants see Blood Thinners
- Antidepressants
- Antihypertensive Medicines see Blood Pressure Medicines
- Antimicrobial Resistance see Antibiotic Resistance
- Antioxidants
- Antisocial Personality Disorder see Personality Disorders
- Anxiety
- Aortic Aneurysm
- Aortic Dissection see Aortic Aneurysm
- Aortic Stenosis see Heart Valve Diseases
- Aphasia
- Aphthous Ulcers see Canker Sores
- Aplastic Anemia
- Apnea, Sleep see Sleep Apnea
- Appendicitis
- Arachnoiditis see Meningitis
- Arctic Health see American Indian and Alaska Native Health
- ARDS see Respiratory Failure
- Arm Injuries and Disorders
- Arnold-Chiari Malformation see Chiari Malformation
- Arrhythmia
- Arsenic
- Arteriosclerosis see Atherosclerosis
- Arteriosclerosis of Extremities see Peripheral Arterial Disease
- Arteriosclerosis, Coronary see Coronary Artery Disease
- Arteriovenous Malformations
- Arthritis
- Arthrography see Joint Disorders
- Arthroplasty see Hip Replacement; Joint Disorders; Knee Replacement
- Arthroscopy see Joint Disorders
- Artificial Feeding see Nutritional Support
- Artificial Insemination see Infertility
- Artificial Lens see Cataract; Refractive Errors
- Artificial Limbs
- Asbestos
- Asbestosis see Asbestos
- Ascorbic Acid see Vitamin C
- Aseptic Meningitis see Meningitis
- Aseptic Necrosis see Osteonecrosis
- Asian American Health
- Asperger Syndrome see Autism Spectrum Disorder
- Aspergillosis
- Assisted Breathing see Critical Care
- Assisted Living
- Assisted Reproductive Technology
- Assistive Devices
- Asthma
- Asthma in Children
- Astigmatism see Refractive Errors
- Ataxia see Cerebellar Disorders; Degenerative Nerve Diseases; Friedreich Ataxia; Movement Disorders
- Ataxia Telangiectasia
- Atelectasis see Collapsed Lung
- Atherosclerosis
- Atherosclerosis, Coronary see Coronary Artery Disease
- Athlete's Foot
- Atopic Dermatitis see Eczema
- Atrial Fibrillation
- Attention Deficit Hyperactivity Disorder
- Auditory Tumor see Acoustic Neuroma
- Autism see Autism Spectrum Disorder
- Autism Spectrum Disorder
- Autoimmune Diseases
- Autoinflammatory Disorders see Autoimmune Diseases
- Automated External Defibrillators see Sudden Cardiac Arrest
- Automobile Safety see Motor Vehicle Safety
- Autonomic Nervous System Disorders
- Avascular Necrosis see Osteonecrosis
- Avian Influenza see Bird Flu
- AVM see Arteriovenous Malformations
B
- B Vitamins
- Babesiosis see Tick Bites
- Baby Blues see Postpartum Depression
- Baby Care see Infant and Newborn Care
- Baby Health Checkup
- Back Injuries
- Back Pain
- Bacteremia see Sepsis
- Bacterial Infections
- Bacterial Vaginosis see Vaginitis
- Bad Breath
- Baker's Cyst see Knee Injuries and Disorders
- Balance Problems
- Balanitis see Penis Disorders
- Bariatric Surgery see Weight Loss Surgery
- Barotrauma
- Barrett's Esophagus see Esophagus Disorders
- Basal Cell Carcinoma see Skin Cancer
- Basedow's Disease see Hyperthyroidism
- Bed Bugs
- Bedsores see Pressure Sores
- Bee Stings see Insect Bites and Stings
- Behcet's Syndrome
- Belching see Gas
- Bell's Palsy
- Bellyache see Abdominal Pain
- Benefits of Exercise
- Benign Prostatic Hypertrophy see Enlarged Prostate (BPH)
- Benign Tumors
- Bereavement
- Berry Aneurysm see Brain Aneurysm
- Bi-polar Disorder see Bipolar Disorder
- Bicycle Safety see Sports Safety
- Bile Duct Cancer
- Bile Duct Diseases
- Biliary Cirrhosis see Bile Duct Diseases
- Biliary Tract Diseases see Bile Duct Diseases; Gallbladder Diseases
- Binge Drinking see Alcohol Use Disorder (AUD)
- Binge Eating see Eating Disorders
- Biodefense and Bioterrorism
- Bioethics see Medical Ethics
- Biological Weapons see Biodefense and Bioterrorism
- Biopsy
- Bioterrorism see Biodefense and Bioterrorism
- Biotin see B Vitamins
- Bipolar Disorder
- Bird Flu
- Birth Control
- Birth Defects
- Birth Injuries see Childbirth Problems
- Birth Weight
- Birthmarks
- Bisexual Health see LGBTQIA+ Health
- Black and African American Health
- Black Widow Spider Bites see Spider Bites
- Bladder Cancer
- Bladder Control see Urinary Incontinence
- Bladder Diseases
- Bladder Infections see Urinary Tract Infections
- Bladder Pain Syndrome see Interstitial Cystitis
- Bleeding
- Bleeding Disorders
- Bleeding, Gastrointestinal see Gastrointestinal Bleeding
- Blepharospasm see Eyelid Disorders
- Blindness see Vision Impairment and Blindness
- Blisters
- Blood
- Blood Cells see Blood; Blood Count Tests
- Blood Clots
- Blood Clots in the Lung see Pulmonary Embolism
- Blood Coagulation Disorders see Bleeding Disorders; Hemophilia
- Blood Count Tests
- Blood Disorders
- Blood Donation see Blood Transfusion and Donation
- Blood Glucose
- Blood Platelet Disorders see Platelet Disorders
- Blood Poisoning see Sepsis
- Blood Pressure see High Blood Pressure; Low Blood Pressure; Vital Signs
- Blood Pressure Medicines
- Blood Sugar see Blood Glucose
- Blood Tests see Blood Count Tests; Laboratory Tests
- Blood Thinners
- Blood Transfusion and Donation
- Blood-Borne Pathogens see Infection Control; Occupational Health for Health Care Providers
- BMI see Body Weight; Weight Control
- Body Art see Piercing and Tattoos
- Body Contouring see Plastic and Cosmetic Surgery
- Body Lice
- Body Odor see Germs and Hygiene; Sweat
- Body Weight
- Bone Cancer
- Bone Density
- Bone Diseases
- Bone Grafts
- Bone Infections
- Bone Loss see Bone Density; Osteoporosis
- Bone Marrow Diseases
- Bone Marrow Transplantation
- Bone Transplantation see Bone Grafts
- Borderline Personality Disorder see Personality Disorders
- Botanicals see Herbal Medicine
- Botox
- Botulinum Toxin see Botox; Botulism
- Botulism
- Bovine Spongiform Encephalopathy see Creutzfeldt-Jakob Disease
- Bowel Incontinence
- Bowel Movement
- Bowel Obstruction see Intestinal Obstruction
- BPH see Enlarged Prostate (BPH)
- Braces, Oral see Orthodontia
- Brachial Plexus Injuries
- Brachytherapy see Radiation Therapy
- Bradycardia see Arrhythmia
- Brain Aneurysm
- Brain Attack see Stroke
- Brain Cancer see Brain Tumors
- Brain Concussion see Concussion
- Brain Diseases
- Brain Disorders, Inborn Genetic see Genetic Brain Disorders
- Brain Hemorrhage see Hemorrhagic Stroke
- Brain Injury see Concussion
- Brain Malformations
- Brain Tumors
- Break-bone Fever see Dengue
- Breast Cancer
- Breast Cancer, Male see Male Breast Cancer
- Breast Diseases
- Breast Implants see Breast Reconstruction; Plastic and Cosmetic Surgery
- Breast Reconstruction
- Breast Reduction see Plastic and Cosmetic Surgery
- Breastfeeding
- Breath Odor see Bad Breath
- Breathing Problems
- Breathing Rate see Vital Signs
- Broken Bones see Fractures
- Bronchial Asthma see Asthma
- Bronchial Disorders
- Bronchiectasis see Bronchial Disorders
- Bronchiolitis see Bronchial Disorders; Respiratory Syncytial Virus Infections
- Bronchitis see Acute Bronchitis; Chronic Bronchitis
- Bronchogenic Carcinoma see Lung Cancer
- Bronchopneumonia see Pneumonia
- Brown Recluse Spider Bites see Spider Bites
- Bruises
- Bruxism see Tooth Disorders
- BSE see Creutzfeldt-Jakob Disease
- Bubonic Plague see Plague
- Bulimia see Eating Disorders
- Bullous Pemphigoid see Pemphigus
- Bullying and Cyberbullying
- Bunions see Toe Injuries and Disorders
- Burns
- Burping see Gas
- Bursitis
- Bypass Surgery see Coronary Artery Bypass Surgery
C
- C-Section see Cesarean Delivery
- C. diff Infections
- CABG see Coronary Artery Bypass Surgery
- CAD see Coronary Artery Disease
- Caffeine
- Calcium
- Calluses see Corns and Calluses
- CAM see Complementary and Integrative Medicine
- Campylobacter Infections
- Canavan Disease see Leukodystrophies
- Cancer
- Cancer Alternative Therapies
- Cancer and Pregnancy see Tumors and Pregnancy
- Cancer Chemotherapy
- Cancer Immunotherapy
- Cancer in Children
- Cancer--Living with Cancer
- Candidiasis see Yeast Infections
- Canes see Mobility Aids
- Canker Sores
- Cannabis see Marijuana
- Car Safety see Motor Vehicle Safety
- Car Seats see Motor Vehicle Safety
- Carbohydrate Metabolism Disorders
- Carbohydrates
- Carbon Monoxide Poisoning
- Carcinoid Tumors
- Carcinoma see Cancer
- Cardiac Arrest see Sudden Cardiac Arrest
- Cardiac Diseases see Heart Diseases
- Cardiac Failure see Heart Failure
- Cardiac Rehabilitation
- Cardiac Surgery see Heart Surgery
- Cardiac Test see Heart Health Tests
- Cardiomyopathy
- Cardiopulmonary Resuscitation see CPR
- Cardiospasm see Esophagus Disorders
- Cardiovascular Diseases see Heart Diseases; Vascular Diseases
- Careers see Health Occupations
- Caregiver Health
- Caregivers
- Caregivers for Alzheimer's Disease see Alzheimer's Caregivers
- Carotid Artery Disease
- Carotid Endarterectomy see Carotid Artery Disease; Ischemic Stroke
- Carpal Tunnel Syndrome
- Carsickness see Motion Sickness
- Cartilage Disorders
- Cat Bites see Animal Bites
- CAT Scans see CT Scans
- Cat Scratch Disease
- Cataract
- Causalgia see Complex Regional Pain Syndrome
- Cavities see Tooth Decay
- Celiac Disease
- Cell Phones see Electromagnetic Fields
- Cellulitis
- Cephalic Disorders see Brain Malformations
- Cerebellar Disorders
- Cerebral Aneurysm see Brain Aneurysm
- Cerebral Hemorrhage see Hemorrhagic Stroke
- Cerebral Palsy
- Cerebrovascular Disease see Stroke
- Cervical Cancer
- Cervical Cancer Screening
- Cervical Dysplasia see Cervix Disorders
- Cervical Pregnancy see Ectopic Pregnancy
- Cervical Spine see Neck Injuries and Disorders
- Cervix Disorders
- Cesarean Delivery
- CFS see Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
- Chagas Disease
- Chalazion see Eyelid Disorders
- Change of Life see Menopause
- Charcot-Marie-Tooth Disease
- Charley Horse see Muscle Cramps
- Chemical Emergencies
- Chemical Warfare see Chemical Emergencies
- Chemical Weapons see Chemical Emergencies
- Chemotherapy see Cancer Chemotherapy
- Chest Injuries and Disorders
- Chest Pain
- Chest Physical Therapy see Pulmonary Rehabilitation
- Chewing Tobacco see Smokeless Tobacco
- CHF see Heart Failure
- Chiari Malformation
- Chickenpox
- Chikungunya
- Chilblains see Frostbite
- Child Abuse
- Child Behavior Disorders
- Child Dental Health
- Child Development
- Child Mental Health
- Child Molestation see Child Sexual Abuse
- Child Nutrition
- Child Safety
- Child Sexual Abuse
- Childbirth
- Childbirth Problems
- Childhood Asthma see Asthma in Children
- Childhood Brain Tumors
- Childhood Cancer see Cancer in Children
- Childhood Leukemia
- Childhood Obesity see Obesity in Children
- Childhood Vaccines
- Children and Diabetes see Diabetes in Children and Teens
- Children and Medicines see Medicines and Children
- Children's Health
- Chiropractic
- Chlamydia Infections
- Choking
- Cholangiocarcinoma see Bile Duct Cancer
- Cholangitis see Bile Duct Diseases
- Cholecystectomy see Gallbladder Diseases
- Choledocholithiasis see Gallstones
- Cholelithiasis see Gallstones
- Cholera
- Cholestasis see Bile Duct Diseases
- Cholesterol
- Cholesterol Levels: What You Need to Know
- Cholesterol Medicines
- Chondrocalcinosis see Gout
- Chondromalacia Patellae see Knee Injuries and Disorders
- Choosing a Doctor or Health Care Service
- Chorea see Movement Disorders
- Chorionic Villi Sampling see Prenatal Testing
- Chromium see Minerals
- Chronic Bronchitis
- Chronic Fatigue Syndrome see Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
- Chronic Granulocytic Leukemia see Chronic Myeloid Leukemia
- Chronic Granulomatous Disease see Immune System and Disorders
- Chronic Illness, Coping see Coping with Chronic Illness
- Chronic Kidney Disease
- Chronic Lymphocytic Leukemia
- Chronic Myelogenous Leukemia see Chronic Myeloid Leukemia
- Chronic Myeloid Leukemia
- Chronic Obstructive Pulmonary Disease see COPD
- Chronic Pain
- Chronic Pancreatitis see Pancreatitis
- Churg-Strauss Syndrome see Eosinophilic Disorders
- Cicatrix see Scars
- Circulatory Disorders see Vascular Diseases
- Circumcision
- Cirrhosis
- CJD see Creutzfeldt-Jakob Disease
- CKD see Chronic Kidney Disease
- Clap see Gonorrhea
- Claudication see Leg Injuries and Disorders; Peripheral Arterial Disease
- Clavicle Injuries see Shoulder Injuries and Disorders
- Cleaning Products see Household Products
- Cleaning, Disinfecting, and Sanitizing
- Cleft Lip and Palate
- Cleft Palate see Cleft Lip and Palate
- Cleft Spine see Spina Bifida
- Climate Change
- Clinical Trials
- CLL see Chronic Lymphocytic Leukemia
- Cloning
- Clostridioides difficile infections see C. diff Infections
- Clostridium difficile infections see C. diff Infections
- Club Drugs
- Cluster Headache see Headache
- CML see Chronic Myeloid Leukemia
- CMV Infections see Cytomegalovirus Infections
- CO Poisoning see Carbon Monoxide Poisoning
- Coal Miner's Lung see Interstitial Lung Diseases
- Cocaine
- Coccidioidomycosis see Valley Fever
- Coccyx see Tailbone Disorders
- Cochlear Implants
- Cold (Temperature) see Frostbite; Hypothermia; Winter Weather Emergencies
- Cold and Cough Medicines
- Cold Sores
- Cold, Common see Common Cold
- Colic see Common Infant and Newborn Problems
- Colitis see Ulcerative Colitis
- Collapsed Lung
- Collarbone Injuries see Shoulder Injuries and Disorders
- College Health
- Colon Cancer see Colorectal Cancer
- Colonic Diseases
- Colonic Polyps
- Colonoscopy
- Color Blindness
- Colorado Tick Fever see Tick Bites
- Colorectal Cancer
- Colostomy see Ostomy
- Coma
- Common Cold
- Common Infant and Newborn Problems
- Communicable Diseases see Infectious Diseases
- Communicating With Your Healthcare Provider see Talking With Your Doctor
- Communication Disorders see Speech and Communication Disorders
- Complementary and Integrative Medicine
- Complex Regional Pain Syndrome
- Compression Fracture see Spine Injuries and Disorders
- Compulsive Gambling
- Concussion
- Conduct Disorder see Child Behavior Disorders
- Condylomata Acuminata see Genital Warts
- Confidentiality see Personal Health Records
- Congenital Adrenal Hyperplasia see Adrenal Gland Disorders
- Congenital Diaphragmatic Hernia see Hernia
- Congenital Heart Defects
- Congestive Heart Failure see Heart Failure
- Conjunctivitis see Pink Eye
- Connective Tissue Disorders
- Constipation
- Contact Dermatitis see Rashes
- Contact Lenses see Eye Wear
- Contraception see Birth Control
- Contusions see Bruises
- Cooley's Anemia see Thalassemia
- COPD
- Coping with Chronic Illness
- Coping with Disasters
- Copper see Minerals
- Copper Storage Disease see Wilson Disease
- Cor Pulmonale see Pulmonary Hypertension
- Cord Blood see Stem Cells
- Corn Syrup see Carbohydrates
- Corneal Disorders
- Corns and Calluses
- Coronary Arteriosclerosis see Coronary Artery Disease
- Coronary Artery Bypass Graft see Coronary Artery Bypass Surgery
- Coronary Artery Bypass Surgery
- Coronary Artery Disease
- Corticosteroids see Steroids
- Cosmetic Surgery see Plastic and Cosmetic Surgery
- Cosmetics
- Costochondritis see Cartilage Disorders
- Cough
- Cough Medicines see Cold and Cough Medicines
- COVID-19 (Coronavirus Disease 2019)
- COVID-19 Testing
- COVID-19 Vaccines
- Coxsackievirus Infections see Viral Infections
- CPR
- Crab Lice see Sexually Transmitted Infections
- Crack see Cocaine
- Cramps see Muscle Cramps
- Cranial Injuries see Head Injuries
- Craniofacial Abnormalities
- Craniofacial Injuries see Facial Injuries and Disorders
- Craniosynostosis see Craniofacial Abnormalities
- Creutzfeldt-Jakob Disease
- Crib Death see Sudden Infant Death Syndrome
- Critical Care
- Crohn's Disease
- Cross Infection see Infection Control; Occupational Health for Health Care Providers
- Crossed Eyes see Eye Movement Disorders
- Croup
- Crutches see Mobility Aids
- Cryptococcosis see Fungal Infections
- Cryptosporidiosis
- CT Scans
- Cubital Tunnel Syndrome see Elbow Injuries and Disorders
- Cushing's Syndrome
- Cutaneous Disorders see Skin Conditions
- Cutting see Self-Harm
- CVA see Stroke
- Cyclothymic Disorder see Mood Disorders
- Cystic Fibrosis
- Cystic Kidney Diseases see Kidney Cysts
- Cystitis see Interstitial Cystitis
- Cystocele see Pelvic Floor Disorders
- Cytomegalovirus Infections
D
- Dandruff, Cradle Cap, and Other Scalp Conditions
- Dandy-Walker Syndrome see Cerebellar Disorders
- DASH Diet see DASH Eating Plan
- DASH Eating Plan
- Day Care see Home Care Services
- Deafness see Hearing Disorders and Deafness; Hearing Problems in Children
- Death and Dying see End of Life Issues
- Decubitus Ulcers see Pressure Sores
- Deep Vein Thrombosis
- Defibrillators, Implantable see Pacemakers and Implantable Defibrillators
- Degenerative Joint Disease see Osteoarthritis
- Degenerative Nerve Diseases
- Dehydration
- Delirium
- Delivery see Childbirth
- Dementia
- Dementia with Lewy Bodies see Lewy Body Dementia
- Dengue
- Dental Caries see Tooth Decay
- Dental Health
- Dental Health, Child see Child Dental Health
- Dental Implants see Dentures
- Dental Sealants see Child Dental Health; Tooth Decay
- Dentures
- Depression
- Depression, Teen see Teen Depression
- Dermatitis see Eczema; Rashes
- Dermatology see Skin Conditions
- Dermatomyositis see Myositis
- Developmental Disabilities
- Diabetes
- Diabetes and Pregnancy
- Diabetes Complications
- Diabetes in Children and Teens
- Diabetes Insipidus
- Diabetes Medicines
- Diabetes Mellitus see Diabetes
- Diabetes Prevention see How to Prevent Diabetes
- Diabetes Type 1
- Diabetes Type 2
- Diabetic Diet
- Diabetic Eye Problems
- Diabetic Foot
- Diabetic Heart Disease
- Diabetic Kidney Problems
- Diabetic Nephropathy see Diabetic Kidney Problems
- Diabetic Nerve Problems
- Diabetic Retinopathy see Diabetic Eye Problems
- Diagnostic Imaging
- Dialysis
- Diaper Rash see Common Infant and Newborn Problems; Rashes
- Diaphragmatic Hernia see Hernia
- Diarrhea
- Dietary Fats
- Dietary Fiber
- Dietary Proteins
- Dietary Sodium see Sodium
- Dietary Supplements
- Dieting see Diets
- Diets
- Digestive Diseases
- Dip see Smokeless Tobacco
- Diphtheria
- Disabilities
- Disaster Preparation and Recovery
- Dislocated Shoulder
- Dislocations
- Diverticulitis see Diverticulosis and Diverticulitis
- Diverticulosis and Diverticulitis
- Dizziness and Vertigo
- Do-Not-Resuscitate Orders see Advance Directives
- Dog Bites see Animal Bites
- Domestic Violence see Intimate Partner Violence
- Donors see Organ Donation
- Down Syndrome
- Drinking see Alcohol; Alcohol Use Disorder (AUD)
- Drinking Water
- Driving see Impaired Driving; Motor Vehicle Safety
- Dropsy see Edema
- Drowning
- Drug abuse see Drug Use and Addiction
- Drug Abuse in Pregnancy see Pregnancy and Substance Use
- Drug Abuse, Prescription see Prescription Drug Misuse
- Drug Allergies see Drug Reactions
- Drug Errors see Medication Errors
- Drug Information see Medicines; Over-the-Counter Medicines
- Drug Interactions see Drug Reactions
- Drug Reactions
- Drug Safety
- Drug Use and Addiction
- Drugged Driving see Impaired Driving
- Drugs and Young People
- Drunk Driving see Impaired Driving
- Dry Eye see Tears
- Dry Mouth
- Dual Diagnosis
- Duchenne Muscular Dystrophy see Muscular Dystrophy
- Duodenal Ulcer see Peptic Ulcer
- Dupuytren Contracture see Finger Injuries and Disorders
- DVT see Deep Vein Thrombosis
- Dwarfism
- Dysautonomia see Autonomic Nervous System Disorders
- Dyscalculia see Learning Disabilities
- Dysentery see Diarrhea
- Dysfunctional uterine bleeding see Vaginal Bleeding
- Dysgeusia see Taste and Smell Disorders
- Dyskinesia see Movement Disorders
- Dyslexia see Learning Disabilities
- Dysmenorrhea see Period Pain
- Dysosmia see Taste and Smell Disorders
- Dyspareunia see Sexual Problems in Women
- Dyspepsia see Indigestion
- Dysphagia see Swallowing Disorders
- Dyspnea see Breathing Problems
- Dysthymic Disorder see Depression
- Dystonia
- Dysuria see Urine and Urination
E
- E-Cigarettes
- E. Coli Infections
- Ear Disorders
- Ear Infections
- Earthquakes
- Eating Disorders
- Ebola
- EBV Infections see Infectious Mononucleosis
- Ecstasy see Club Drugs
- Ectopic Pregnancy
- Eczema
- Edema
- Egg Allergy see Food Allergy
- Egg Donation see Assisted Reproductive Technology
- Ehlers-Danlos Syndrome
- Ehrlichiosis see Tick Bites
- Elbow Injuries and Disorders
- Elder Abuse
- Electrical Injuries
- Electrolytes see Fluid and Electrolyte Balance
- Electromagnetic Fields
- Electronic Health Records see Personal Health Records
- Emergency Medical Services
- Emergency Preparedness see Disaster Preparation and Recovery
- EMF see Electromagnetic Fields
- Emotional Health see Mental Health; Older Adult Mental Health
- Emphysema
- Employee Health see Occupational Health
- Encephalitis
- Encopresis see Bowel Incontinence
- End of Life Care see Hospice Care
- End of Life Issues
- End-Stage Renal Disease see Kidney Failure
- Endocarditis
- Endocrine Diseases
- Endometrial Cancer see Uterine Cancer
- Endometriosis
- Endoscopy
- Enlarged Prostate (BPH)
- Enterocele see Hernia
- Enterovirus see Viral Infections
- Environmental Health
- Environmental Tobacco Smoke see Secondhand Smoke
- Eosinophilia see Eosinophilic Disorders
- Eosinophilic Disorders
- Eosinophilic Esophagitis
- Epilepsy
- Epstein-Barr Virus Infections see Infectious Mononucleosis
- Equipment Safety see Medical Device Safety
- Erectile Dysfunction
- Ergonomics
- ERT see Hormone Replacement Therapy
- Erythema Infectiosum see Fifth Disease
- Erythroblastosis Fetalis see Rh Incompatibility
- Esophageal Cancer
- Esophagus Disorders
- ESRD see Kidney Failure
- Essential Tremor see Tremor
- Estrogen Replacement Therapy see Hormone Replacement Therapy
- Evaluating Health Information
- Ewing's Sarcoma see Bone Cancer
- Exercise and Physical Fitness
- Exercise Benefits see Benefits of Exercise
- Exercise for Children
- Exercise for Older Adults
- Exercise: How Much? see How Much Exercise Do I Need?
- Eye Cancer
- Eye Care
- Eye Diseases
- Eye Infections
- Eye Injuries
- Eye Movement Disorders
- Eye Wear
- Eyeglasses see Eye Wear
- Eyelid Disorders
F
- Facial Injuries and Disorders
- Failure to Thrive see Growth Disorders
- Fainting
- Fallopian Tube Cancer see Ovarian Cancer
- Falls
- False Teeth see Dentures
- Familial Combined Hyperlipidemia see Cholesterol; Cholesterol Levels: What You Need to Know; Triglycerides
- Familial Dysbetalipoproteinemia see Cholesterol; Cholesterol Levels: What You Need to Know
- Familial Hypercholesterolemia see Cholesterol; Cholesterol Levels: What You Need to Know
- Familial Hypertriglyceridemia see Triglycerides
- Family History
- Family Issues
- Family Planning see Birth Control
- Fanconi Anemia see Aplastic Anemia
- Farmer's Lung see Interstitial Lung Diseases
- Farsightedness see Refractive Errors
- FAS see Fetal Alcohol Spectrum Disorders
- Fatigue
- Fats, Dietary see Dietary Fats
- Fatty Liver Disease
- Fecal Impaction see Intestinal Obstruction
- Female Circumcision see Sexual Problems in Women
- Female Infertility
- Female Sexual Dysfunction see Sexual Problems in Women
- Female Sterilization see Tubal Ligation
- Ferritin see Iron
- Fertility see Infertility; Preconception Care
- Fetal Alcohol Spectrum Disorders
- Fetal Alcohol Syndrome see Fetal Alcohol Spectrum Disorders
- Fetal Health and Development
- Fetal Ultrasound see Prenatal Testing
- Fever
- Fever Blister see Cold Sores
- Fiber see Dietary Fiber
- Fibrocystic Breast Disease see Breast Diseases
- Fibroids see Uterine Fibroids
- Fibromyalgia
- Fifth Disease
- Financial Assistance
- Finding health sources I can trust see Evaluating Health Information
- Finding trustworthy information see Evaluating Health Information
- Finger Injuries and Disorders
- Fingernails see Nail Diseases
- Fire Safety
- First Aid
- Fistulas
- Fitness see Exercise and Physical Fitness; Exercise for Children; Exercise for Older Adults; Sports Fitness
- Flatulence see Gas
- Flea Bites see Insect Bites and Stings
- Flesh-Eating Bacteria see Bacterial Infections
- Floater see Retinal Disorders
- Floods
- Flu
- Flu Shot
- Fluid and Electrolyte Balance
- Folate see Folic Acid
- Folic Acid
- Folliculitis see Hair Problems
- Food Additives see Nutrition
- Food Allergy
- Food Labeling
- Food Poisoning see Foodborne Illness
- Food Safety
- Foodborne Illness
- Foot Health
- Foot Injuries and Disorders
- Foreign Bodies
- Fractures
- Fragile X Syndrome
- FRAXA see Fragile X Syndrome
- Friedreich Ataxia
- Frostbite
- Frostnip see Frostbite
- Frozen Shoulder see Shoulder Injuries and Disorders
- Fungal Infections
- Fungicides see Pesticides
G
- G6PD Deficiency
- Gait Abnormalities see Walking Problems
- Gallbladder Cancer
- Gallbladder Diseases
- Gallstones
- Gambling see Compulsive Gambling
- Gamete Intrafallopian Transfer see Infertility
- Ganglion Cyst see Wrist Injuries and Disorders
- Gangrene
- Gas
- Gas Gangrene see Gangrene
- Gastric Bypass see Weight Loss Surgery
- Gastric Cancer see Stomach Cancer
- Gastric Disorders see Stomach Disorders
- Gastritis see Stomach Disorders
- Gastroenteritis
- Gastroesophageal Reflux see GERD
- Gastrointestinal Bleeding
- Gastrointestinal Diseases see Digestive Diseases
- Gastrointestinal Stromal Tumors see Intestinal Cancer
- Gastroparesis see Stomach Disorders
- Gastroplasty see Weight Loss Surgery
- Gaucher Disease
- Generalized Anxiety Disorder see Anxiety
- Genes and Gene Therapy
- Genetic Brain Disorders
- Genetic Counseling
- Genetic Disorders
- Genetic Testing
- Genital Herpes
- Genital Warts
- Geographic Tongue see Tongue Disorders
- GERD
- Germ Warfare see Biodefense and Bioterrorism
- German Measles see Rubella
- Germs and Hygiene
- Gestational Carrier see Assisted Reproductive Technology
- Gestational Diabetes see Diabetes and Pregnancy
- Gestational Hypertension see High Blood Pressure in Pregnancy
- Gestational Trophoblastic Disease see Tumors and Pregnancy
- GHB see Club Drugs
- GI Bleeding see Gastrointestinal Bleeding
- Giant Cell Arteritis
- Giardia Infections
- Gilbert Disease see Liver Diseases
- Glandular Fever see Infectious Mononucleosis
- Glasses see Eye Wear
- Glaucoma
- Glioma see Brain Tumors
- Global Health
- Global Warming see Climate Change
- Glossitis see Tongue Disorders
- Glucocorticoids see Steroids
- Glucose see Blood Glucose
- Glucose-6-phosphate Dehydrogenase Deficiency see G6PD Deficiency
- Gluten Intolerance see Celiac Disease; Gluten Sensitivity
- Gluten Sensitivity
- Gluten-Sensitive Enteropathy see Celiac Disease
- Goiter see Thyroid Diseases
- Gonorrhea
- Gout
- Granulomatosis with Polyangiitis
- Graves' Disease see Hyperthyroidism
- Grief see Bereavement
- Grippe see Flu
- Growth Disorders
- Guide to Good Posture
- Guillain-Barre Syndrome
- Gulf Oil Spill see Oil Spills
- Gulf War Syndrome see Veterans and Military Health
- Gum Disease
- Gynecomastia see Breast Diseases
H
- H. Pylori Infections see Helicobacter Pylori Infections
- H1N1 Flu (Swine Flu)
- Haemophilus Infections
- Hair Loss
- Hair Problems
- Hair Pulling see Self-Harm
- Hairy Cell Leukemia see Leukemia
- Halitosis see Bad Breath
- Hallucinogens see Club Drugs; Drug Use and Addiction
- Hammer Toe see Toe Injuries and Disorders
- Hand Injuries and Disorders
- Hand, Foot, and Mouth Disease see Viral Infections
- Handwashing see Germs and Hygiene
- Hansen's Disease see Mycobacterial Infections
- Hantavirus Infections
- Hardening of the Arteries see Atherosclerosis
- Hashimoto's Disease see Hypothyroidism
- Hay Fever
- HDL: The "Good" Cholesterol
- Head and Neck Cancer
- Head Injuries
- Head Lice
- Headache
- Health Checkup
- Health Disparities
- Health Equity see Health Disparities
- Health Facilities
- Health Fraud
- Health Insurance
- Health Literacy
- Health Maintenance Organizations see Managed Care
- Health Occupations
- Health Problems in Pregnancy
- Health Risks of an Inactive Lifestyle
- Health Screening
- Health Statistics
- Healthcare-Associated Infections see Infection Control
- Healthy Aging
- Healthy Eating see Nutrition
- Healthy Living
- Healthy Sleep
- Hearing Aids
- Hearing Disorders and Deafness
- Hearing Problems in Children
- Heart Attack
- Heart Defects see Congenital Heart Defects
- Heart Disease in Women
- Heart Disease Prevention see How to Prevent Heart Disease
- Heart Diseases
- Heart Diseases, Congenital see Congenital Heart Defects
- Heart Diseases--Rehabilitation see Cardiac Rehabilitation
- Heart Failure
- Heart Health Tests
- Heart Murmur see Congenital Heart Defects; Heart Valve Diseases
- Heart Rate see Vital Signs
- Heart Surgery
- Heart Test see Heart Health Tests
- Heart Transplantation
- Heart Valve Diseases
- Heartburn
- Heat Exhaustion see Heat Illness
- Heat Illness
- Heel Injuries and Disorders
- Heimlich Maneuver see Choking
- Helicobacter Pylori Infections
- Hemangioma see Benign Tumors; Birthmarks; Vascular Diseases
- Hematologic Disorders see Blood Disorders
- Hematoma see Bleeding
- Hematuria see Urinalysis
- Hemiplegia see Paralysis
- Hemochromatosis
- Hemodialysis see Dialysis
- Hemoglobin A1c see A1C
- Hemoglobin SS Disease see Sickle Cell Disease
- Hemolytic Disease of Newborn see Rh Incompatibility
- Hemophilia
- Hemorrhage see Bleeding
- Hemorrhagic Fevers
- Hemorrhagic Stroke
- Hemorrhoids
- Hepatic Diseases see Liver Diseases
- Hepatic Transplantation see Liver Transplantation
- Hepatitis
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hepatoblastoma see Liver Cancer
- Hepatocellular Carcinoma see Liver Cancer
- Hepatolenticular Degeneration see Wilson Disease
- Herbal Medicine
- Herbicides see Pesticides
- Hernia
- Herniated Disk
- Heroin
- Herpes Genitalis see Genital Herpes
- Herpes Simplex
- Herpes Zoster see Shingles
- Herpes, Oral see Cold Sores
- Hiatal Hernia
- Hib see Haemophilus Infections
- Hiccups
- Hidradenitis Suppurativa
- High Blood Glucose see Hyperglycemia
- High Blood Pressure
- High Blood Pressure in Pregnancy
- High Blood Pressure Medicines see Blood Pressure Medicines
- High Blood Pressure Prevention see How to Prevent High Blood Pressure
- High Blood Sugar see Hyperglycemia
- High Cholesterol in Children and Teens
- High Risk Pregnancy see Health Problems in Pregnancy
- Hip Injuries and Disorders
- Hip Replacement
- HIPAA see Health Insurance; Personal Health Records
- Histoplasmosis
- HIV
- HIV and Infections
- HIV and Pregnancy
- HIV in Women
- HIV Medicines
- HIV--Living With see Living with HIV
- HIV: PrEP and PEP
- Hives
- HMO see Managed Care
- Hoarding see Obsessive-Compulsive Disorder
- Hodgkin Lymphoma
- Home Care Services
- Homelessness and Health
- Homeopathy see Complementary and Integrative Medicine
- Homosexuality see LGBTQIA+ Health
- Hormone Replacement Therapy
- Hormones
- Horner Syndrome see Autonomic Nervous System Disorders
- Hospice Care
- Hospital-Acquired Infections see Occupational Health for Health Care Providers
- Hospitals see Health Facilities
- Hot (Temperature) see Fever; Heat Illness
- Hot Flashes see Menopause
- Household Products
- How Much Exercise Do I Need?
- How to Improve Mental Health
- How to Lower Cholesterol
- How to Lower Cholesterol with Diet
- How to Prevent Diabetes
- How to Prevent Heart Disease
- How to Prevent High Blood Pressure
- HPV
- HPV Vaccine see HPV
- HRT see Hormone Replacement Therapy
- Huffing see Inhalants
- Human Genome Project see Genes and Gene Therapy
- Human Immunodeficiency Virus see HIV
- Human Papillomavirus see HPV
- Huntington's Disease
- Hurricanes
- Hydrocephalus
- Hydrophobia see Rabies
- Hyperactivity see Attention Deficit Hyperactivity Disorder
- Hyperbaric Oxygen see Oxygen Therapy
- Hypercalcemia see Calcium
- Hypercholesterolemia see Cholesterol; Cholesterol Levels: What You Need to Know
- Hypereosinophilic Syndrome see Eosinophilic Disorders
- Hyperglycemia
- Hyperhidrosis see Sweat
- Hyperkalemia see Potassium
- Hyperlipidemia see Cholesterol; Cholesterol Levels: What You Need to Know; Triglycerides
- Hypermobility Syndrome see Ehlers-Danlos Syndrome
- Hypernephroma see Kidney Cancer
- Hyperopia see Refractive Errors
- Hyperparathyroidism see Parathyroid Disorders
- Hyperpigmentation see Skin Pigmentation Disorders
- Hypersensitivity see Allergy
- Hypertension see High Blood Pressure
- Hypertension, Pulmonary see Pulmonary Hypertension
- Hyperthyroidism
- Hypertriglyceridemia see Triglycerides
- Hypertrophic Scar see Scars
- Hyperuricemia see Gout
- Hypocalcemia see Calcium
- Hypoglycemia
- Hypoglycemic Medicines see Diabetes Medicines
- Hypokalemia see Potassium
- Hyponatremia see Sodium
- Hypoparathyroidism see Parathyroid Disorders
- Hypopharyngeal Cancer see Throat Cancer
- Hypopigmentation see Skin Pigmentation Disorders
- Hypotension see Low Blood Pressure
- Hypothermia
- Hypothyroidism
- Hysterectomy
I
- IBS see Irritable Bowel Syndrome
- Icterus see Jaundice
- ICU see Critical Care
- Identifying health misinformation see Evaluating Health Information
- Ileostomy see Ostomy
- Immune System and Disorders
- Immunization, Childhood see Childhood Vaccines
- Impacted Tooth see Tooth Disorders
- Impaired Driving
- Impetigo
- Implantable Defibrillators see Pacemakers and Implantable Defibrillators
- Impotence see Erectile Dysfunction
- In Vitro Fertilization see Assisted Reproductive Technology
- In-home Care see Home Care Services
- Incontinence see Urinary Incontinence
- Indigestion
- Indoor Air Pollution
- Infant and Newborn Care
- Infant and Newborn Development
- Infant and Newborn Nutrition
- Infantile Paralysis see Polio and Post-Polio Syndrome
- Infection Control
- Infections and Pregnancy
- Infections, Bacterial see Bacterial Infections
- Infections, Bladder see Urinary Tract Infections
- Infections, Fungal see Fungal Infections
- Infections, Viral see Viral Infections
- Infectious Arthritis
- Infectious Diseases
- Infectious Mononucleosis
- Infertility
- Infertility, Female see Female Infertility
- Infertility, Male see Male Infertility
- Inflammatory Bowel Disease see Crohn's Disease; Ulcerative Colitis
- Influenza see Flu
- Influenza Vaccine see Flu Shot
- Informed Consent see Patient Rights
- Ingrown Nail see Nail Diseases
- Inguinal Hernia see Hernia
- Inhalants
- Inhalation Injuries
- Injuries see Wounds and Injuries
- Insect Bites and Stings
- Insect Repellents see Insect Bites and Stings
- Insecticides see Pesticides
- Insomnia
- Insulin see Diabetes Medicines
- Insulin Resistance see Metabolic Syndrome; Prediabetes
- Insulin-Dependent Diabetes Mellitus see Diabetes Type 1
- Insurance see Health Insurance; Managed Care; Medicaid; Medicare
- Integrative Medicine see Complementary and Integrative Medicine
- Intermittent Claudication see Leg Injuries and Disorders; Peripheral Arterial Disease
- International health see Global Health
- Interstitial Cystitis
- Interstitial Lung Diseases
- Interstitial Pneumonitis see Interstitial Lung Diseases
- Intestinal Cancer
- Intestinal Diseases see Colonic Diseases; Small Intestine Disorders
- Intestinal Obstruction
- Intestinal Volvulus see Intestinal Obstruction
- Intimate Partner Violence
- Intracranial Aneurysm see Brain Aneurysm
- Intraocular Lens see Cataract; Refractive Errors
- Intraocular Melanoma see Eye Cancer; Melanoma
- Intussusception see Intestinal Obstruction
- Iron
- Iron Deficiency Anemia see Anemia
- Iron Overload Disease see Hemochromatosis
- Irregular Heartbeat see Arrhythmia
- Irritable Bowel Syndrome
- Ischemic Stroke
- Islet Cell Carcinoma see Pancreatic Cancer
- Islet Cell Transplantation
- Itching
- IUD see Birth Control
- IVF see Assisted Reproductive Technology
J
- Jakob-Creutzfeldt Disease see Creutzfeldt-Jakob Disease
- Jaundice
- Jaw Injuries and Disorders
- Jet Lag see Traveler's Health
- Jock Itch see Tinea Infections
- Joint Disorders
- Juvenile Arthritis
- Juvenile Diabetes see Diabetes Type 1
- Juvenile Rheumatoid Arthritis see Juvenile Arthritis
K
- Kaposi Sarcoma
- Kawasaki Disease
- Keloids see Scars
- Kernicterus see Jaundice
- Kidney Biopsy see Kidney Tests
- Kidney Cancer
- Kidney Cysts
- Kidney Diseases
- Kidney Failure
- Kidney Function Tests see Kidney Tests
- Kidney Infections see Urinary Tract Infections
- Kidney Stones
- Kidney Tests
- Kidney Transplantation
- Klinefelter Syndrome
- Knee Injuries and Disorders
- Knee Replacement
- Kyphosis see Spine Injuries and Disorders
L
- Labor see Childbirth
- Laboratory Tests
- Lacerations see Wounds and Injuries
- Lactose Intolerance
- Language Problems see Speech and Communication Disorders; Speech and Language Problems in Children
- Large for Gestational Age see Birth Weight
- Laryngeal Cancer see Throat Cancer
- Laryngitis see Throat Disorders; Voice Disorders
- Laryngopharyngeal Cancer see Throat Cancer
- Laser Eye Surgery
- LASIK see Laser Eye Surgery
- Lassa Fever see Hemorrhagic Fevers
- Latex Allergy
- Latino and Hispanic American Health
- Lazy Eye see Amblyopia
- LDL: The "Bad" Cholesterol
- lead exposure see Lead Poisoning
- Lead Poisoning
- Learning Disabilities
- Leg Cramps see Leg Injuries and Disorders; Muscle Cramps
- Leg Injuries and Disorders
- Legg-Calve-Perthes Disease see Osteonecrosis
- Legionnaires' Disease
- Leishmaniasis
- Leprosy see Mycobacterial Infections
- Lesbian Health see LGBTQIA+ Health
- Leukemia
- Leukemia, Acute Lymphoblastic see Acute Lymphocytic Leukemia
- Leukemia, Acute Lymphocytic see Acute Lymphocytic Leukemia
- Leukemia, Childhood see Childhood Leukemia
- Leukemia, Chronic Lymphocytic see Chronic Lymphocytic Leukemia
- Leukemia, Myeloblastic, Acute see Acute Myeloid Leukemia
- Leukemia, Myelogenous, Acute see Acute Myeloid Leukemia
- Leukemia, Myeloid, Acute see Acute Myeloid Leukemia
- Leukemia, Myeloid, Chronic see Chronic Myeloid Leukemia
- Leukodystrophies
- Lewy Body Dementia
- LGBTQIA+ Health
- Life Support see Critical Care
- Ligament Injuries see Sprains and Strains
- Lightning Strikes see Electrical Injuries
- Limb Loss
- Lipid Metabolism Disorders
- Listeria Infections
- Liver Cancer
- Liver Cirrhosis see Cirrhosis
- Liver Diseases
- Liver Spots see Skin Aging
- Liver Transplantation
- Living Wills see Advance Directives
- Living with Cancer see Cancer--Living with Cancer
- Living with HIV
- Lockjaw see Tetanus
- Long COVID see Post-COVID Conditions (Long COVID)
- Long-Term Care see Assisted Living; Nursing Homes
- Lou Gehrig's Disease see Amyotrophic Lateral Sclerosis
- Low Back Pain see Back Pain
- Low Birth Weight see Birth Weight
- Low Blood Pressure
- Low Blood Sugar see Hypoglycemia
- Low Cholesterol Diet see How to Lower Cholesterol with Diet
- Low Sperm Count see Male Infertility
- Low Vision see Vision Impairment and Blindness
- LTK see Laser Eye Surgery
- Lumbago see Back Pain
- Lumpectomy see Mastectomy
- Lung Cancer
- Lung Diseases
- Lung Rehabilitation see Pulmonary Rehabilitation
- Lung Transplantation
- Lupus
- Lyme Disease
- Lymph Nodes see Lymphatic Diseases
- Lymphatic Diseases
- Lymphatic Obstruction see Lymphedema
- Lymphedema
- Lymphoma
M
- Macular Degeneration
- Mad Cow Disease see Creutzfeldt-Jakob Disease
- Magnesium see Minerals
- Magnetic Resonance Imaging see MRI Scans
- Makeup see Cosmetics
- Malabsorption Syndromes
- Malaria
- Male Breast Cancer
- Male Genital Disorders see Penis Disorders; Testicular Disorders
- Male Infertility
- Male Menopause see Men's Health
- Male Sterilization see Vasectomy
- Malignancy see Cancer
- Malnutrition
- Mammaplasty see Breast Reconstruction
- Mammography
- Man-Made Disasters see Biodefense and Bioterrorism; Chemical Emergencies; Radiation Emergencies
- Managed Care
- Mandibular Disorders see Jaw Injuries and Disorders
- Manic-Depressive Illness see Bipolar Disorder
- Maple Syrup Urine Disease see Genetic Brain Disorders
- Marfan Syndrome
- Marijuana
- Mastectomy
- Maternal Health see Postpartum Care
- Maxillary Disorders see Jaw Injuries and Disorders
- MCI see Mild Cognitive Impairment
- MDMA see Club Drugs
- MDS see Myelodysplastic Syndromes
- Measles
- Mediastinal Disorders see Chest Injuries and Disorders
- Medicaid
- Medical Device Safety
- Medical Ethics
- Medical Professions see Health Occupations
- Medical Research see Understanding Medical Research
- Medicare
- Medication Errors
- Medicinal Herbs see Herbal Medicine
- Medicines
- Medicines and Children
- Medicines and Pregnancy see Pregnancy and Medicines
- Medicines, Over-the-Counter see Over-the-Counter Medicines
- Mediterranean Anemia see Thalassemia
- Melanoma
- Memory
- Men's Health
- Meniere's Disease
- Meningioma see Brain Tumors
- Meningitis
- Meningococcal Disease
- Meningococcal Infections see Meningococcal Disease
- Meningococcemia see Meningococcal Disease
- Meniscus see Knee Injuries and Disorders
- Menopausal Hormone Therapy see Hormone Replacement Therapy
- Menopause
- Menopause, Male see Men's Health
- Menstruation
- Mental Disorders
- Mental Health
- Mental Health, Child see Child Mental Health
- Mental Health, Older Adults see Older Adult Mental Health
- Mental Health, Teen see Teen Mental Health
- Mental Retardation see Developmental Disabilities
- Mercury
- Merkel Cell Cancer see Skin Cancer
- Mesothelioma
- Metabolic Disorders
- Metabolic Syndrome
- Methadone see Pain Relievers
- Methamphetamine
- Methicillin Resistant Staphylococcus Aureus see MRSA
- MI see Heart Attack
- Micturition see Urine and Urination
- Migraine
- Mild Cognitive Impairment
- Military Health see Veterans and Military Health
- Milk Allergy see Food Allergy
- Milk Intolerance see Lactose Intolerance
- Minerals
- Mini-Stroke see Transient Ischemic Attack
- Miscarriage
- Mitochondrial Diseases
- Mitral Valve Prolapse
- Mixed Connective Tissue Disease see Connective Tissue Disorders
- Mobility Aids
- Molar Pregnancy see Tumors and Pregnancy
- Molds
- Moles
- Molluscum Contagiosum see Skin Infections
- Moniliasis see Yeast Infections
- Monkeypox see Mpox
- Mono see Infectious Mononucleosis
- Mononucleosis see Infectious Mononucleosis
- Mood Disorders
- Morphea see Scleroderma
- Morton's Neuroma see Foot Injuries and Disorders
- Mosquito Bites
- Motion Sickness
- Motor Vehicle Safety
- Mouth Cancer see Oral Cancer
- Mouth Disorders
- Movement Disorders
- Mpox
- MRI Scans
- MRSA
- MS see Multiple Sclerosis
- Mucocutaneous Lymph Node Syndrome see Kawasaki Disease
- Mucolipidoses see Metabolic Disorders
- Mucopolysaccharidoses see Carbohydrate Metabolism Disorders
- Multifocal Atrial Tachycardia see Arrhythmia
- Multiple Births see Twins, Triplets, Multiple Births
- Multiple Endocrine Neoplasia see Endocrine Diseases; Parathyroid Disorders
- Multiple Myeloma
- Multiple Sclerosis
- Multiple System Atrophy see Autonomic Nervous System Disorders
- Mumps
- Muscle Cramps
- Muscle Disorders
- Muscle Strain see Sprains and Strains
- Muscular Dystrophy
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
- Myasthenia Gravis
- Mycobacterial Infections
- Mycoses see Fungal Infections
- Myelodysplastic Syndromes
- Myelomeningocele see Spina Bifida
- Myeloproliferative Disorders see Bone Marrow Diseases
- Myocardial Infarction see Heart Attack
- Myopathies see Muscle Disorders
- Myopia see Refractive Errors
- Myositis
N
- Nail Diseases
- Narcissism see Personality Disorders
- Narcolepsy see Sleep Disorders
- Narcotics see Pain Relievers
- Nasal Cancer
- Nasal Disorders see Nose Injuries and Disorders
- Nasopharyngeal Cancer see Throat Cancer
- Native Hawaiian and Pacific Islander Health
- Natural Disasters see Earthquakes; Floods; Hurricanes; Tornadoes; Tsunamis; Volcanoes; Winter Weather Emergencies
- Nausea and Vomiting
- Nearsightedness see Refractive Errors
- Neck Injuries and Disorders
- Necrotizing Fasciitis see Bacterial Infections
- Neoplasms see Cancer
- Nephritis see Kidney Diseases
- Nephroblastoma see Wilms Tumor
- Nephrolithiasis see Kidney Stones
- Nerve Diseases see Neurologic Diseases
- Nervous System Diseases see Neurologic Diseases
- Neural Tube Defects
- Neuroblastoma
- Neurodegenerative Diseases see Degenerative Nerve Diseases
- Neurofibromatosis
- Neurogenic Bladder see Bladder Diseases
- Neurologic Diseases
- Neuroma, Acoustic see Acoustic Neuroma
- Neuromuscular Disorders
- Neuropathy see Diabetic Nerve Problems; Peripheral Nerve Disorders
- Nevus see Birthmarks; Moles
- Newborn Screening
- Niacin see B Vitamins
- Nicotine see Smoking
- Niemann-Pick Disease see Genetic Brain Disorders
- Night Terrors see Sleep Disorders
- Noise
- Non-Drug Pain Management
- Non-Hodgkin Lymphoma see Lymphoma
- Non-Insulin Dependent Diabetes Mellitus see Diabetes Type 2
- Non-Prescription Drugs see Over-the-Counter Medicines
- Non-Small Cell Lung Cancer see Lung Cancer
- Nonalcoholic Fatty Liver Disease see Fatty Liver Disease
- Nontropical Sprue see Celiac Disease
- Norovirus Infections
- Norwalk Virus Infections see Norovirus Infections
- Nose Injuries and Disorders
- Nosebleed see Nose Injuries and Disorders
- Nuclear Scans
- Nursing Homes
- Nut Allergy see Food Allergy
- Nutrition
- Nutrition and Pregnancy see Pregnancy and Nutrition
- Nutrition for Older Adults
- Nutrition Labeling see Food Labeling
- Nutrition, Child see Child Nutrition
- Nutritional Support
- Nystagmus see Eye Movement Disorders
O
- Obesity
- Obesity in Children
- Obesity Surgery see Weight Loss Surgery
- Obsessive-Compulsive Disorder
- Occupational Health
- Occupational Health for Health Care Providers
- Occupational Injuries see Occupational Health
- Occupational Therapy see Rehabilitation
- OCD see Obsessive-Compulsive Disorder
- Oil Spills
- Older Adult Health
- Older Adult Mental Health
- Ombudsman Programs see Patient Rights
- Omega-3 Fatty Acids see Dietary Fats
- Oncology see Cancer
- Onychomycosis see Nail Diseases
- Open Heart Surgery see Heart Surgery
- Open Spine see Spina Bifida
- Operation see Surgery
- Ophthalmology see Eye Diseases
- Opiates see Heroin; Opioids and Opioid Use Disorder (OUD)
- Opioid Abuse and Addiction see Opioids and Opioid Use Disorder (OUD)
- Opioid Abuse and Addiction Treatment see Opioid Use Disorder (OUD) Treatment
- Opioid Overdose
- Opioid Use Disorder (OUD) Treatment
- Opioids and Opioid Use Disorder (OUD)
- Opportunistic Infections in AIDS see HIV and Infections
- Optic Nerve Disorders
- Oral Cancer
- Oral Health see Dental Health
- Oral Health, Child see Child Dental Health
- Oral Herpes see Cold Sores
- Oral Tobacco see Smokeless Tobacco
- Organ Donation
- Organ Transplantation
- Oropharyngeal Cancer see Throat Cancer
- Orthodontia
- Orthostatic Hypotension see Autonomic Nervous System Disorders; Low Blood Pressure
- Osteitis Deformans see Paget's Disease of Bone
- Osteoarthritis
- Osteogenesis Imperfecta
- Osteomalacia see Vitamin D Deficiency
- Osteomyelitis see Bone Infections
- Osteonecrosis
- Osteopenia see Bone Density
- Osteoporosis
- Osteosarcoma see Bone Cancer
- Ostomy
- OTC Medicines see Over-the-Counter Medicines
- Otitis Media see Ear Infections
- Ovarian Cancer
- Ovarian Cysts
- Ovarian Disorders
- Ovarian Insufficiency see Ovarian Disorders; Primary Ovarian Insufficiency
- Over-the-Counter Medicines
- Overactive Bladder
- Overactive Thyroid see Hyperthyroidism
- Overweight see Body Weight; Obesity
- Oxygen Therapy
- Ozone
P
- Pacemakers and Implantable Defibrillators
- Pacific Islander Health see Native Hawaiian and Pacific Islander Health
- PAD see Peripheral Arterial Disease
- Paget's Disease of Bone
- Paget's Disease of Breast see Breast Cancer
- Pain
- Pain Relievers
- Pain, Abdominal see Abdominal Pain
- Pain, Back see Back Pain
- Pain, Chest see Chest Pain
- Pain, Chronic see Chronic Pain
- Painful Bladder Syndrome see Interstitial Cystitis
- Painkillers see Pain Relievers
- Palliative Care
- Pancreas Transplantation
- Pancreatic Cancer
- Pancreatic Diseases
- Pancreatitis
- Panic Disorder
- Pantothenic Acid see B Vitamins
- Paralysis
- Paralysis Agitans see Parkinson's Disease
- Paralysis, Infantile see Polio and Post-Polio Syndrome
- Paralytic Ileus see Intestinal Obstruction
- Paranasal Sinus Cancer see Nasal Cancer
- Paraplegia see Paralysis
- Parasitic Diseases
- Parathyroid Disorders
- Parenteral Nutrition see Nutritional Support
- Parenting
- Parkinson's Disease
- Paronychia see Nail Diseases
- Parotid Gland Cancer see Salivary Gland Cancer
- Parotid Gland Disorders see Salivary Gland Disorders
- Partner Abuse see Intimate Partner Violence
- Parvovirus B19 see Fifth Disease
- Passive Smoking see Secondhand Smoke
- Patella see Knee Injuries and Disorders
- Paternity Testing see Genetic Testing
- Pathological Gambling see Compulsive Gambling
- Patient Portals see Personal Health Records
- Patient Records see Personal Health Records
- Patient Rights
- Patient Safety
- PCOS see Polycystic Ovary Syndrome
- Peanut Allergy see Food Allergy
- Pediatrics see Children's Health
- Pee see Urine and Urination
- Pelvic Exam see Women's Health Checkup
- Pelvic Floor Disorders
- Pelvic Inflammatory Disease
- Pelvic Pain
- Pelvis see Hip Injuries and Disorders
- Pemphigoid see Pemphigus
- Pemphigus
- Penile Disorders see Penis Disorders
- Penis Disorders
- PEP see HIV: PrEP and PEP
- Peptic Ulcer
- Performance-Enhancing Drugs see Anabolic Steroids; Sports Fitness
- Pericardial Disorders
- Pericardial Effusion see Pericardial Disorders
- Pericarditis see Pericardial Disorders
- Perimenopause see Menopause
- Period Pain
- Periodontal Disease see Gum Disease
- Peripheral Arterial Disease
- Peripheral Nerve Disorders
- Peritoneal Dialysis see Dialysis
- Peritoneal Disorders
- Peritonitis see Peritoneal Disorders
- Persian Gulf War see Veterans and Military Health
- Persistent Vegetative State see Coma
- Personal Health Records
- Personality Disorders
- Perspiration see Sweat
- Pertussis see Whooping Cough
- Pervasive Developmental Disorder see Autism Spectrum Disorder
- Pesticides
- Pet Health
- PET Scans see Nuclear Scans
- Pets see Pet Health
- Peyronie's Disease see Penis Disorders
- Pfiesteria Infections see Water Pollution
- Phantom Limb see Limb Loss
- Pharyngeal Cancer see Throat Cancer
- Pharyngitis see Sore Throat
- Pharynx Disorders see Throat Disorders
- Phenylketonuria
- Pheochromocytoma
- Phobias
- Phosphorus see Minerals
- Physical Fitness see Exercise and Physical Fitness
- Physical Therapy see Rehabilitation
- Phytotherapy see Herbal Medicine
- Pica see Eating Disorders
- PID see Pelvic Inflammatory Disease
- Piercing and Tattoos
- Piles see Hemorrhoids
- Pilonidal Cyst see Tailbone Disorders
- Pimples see Acne
- Pinguecula see Eye Diseases
- Pink Eye
- Pinworms
- Pituitary Disorders
- Pituitary Tumors
- PKU see Phenylketonuria
- Plague
- Plantar Fasciitis see Heel Injuries and Disorders
- Plantar Warts see Warts
- Plaque, Atherosclerotic see Atherosclerosis
- Plaque, Dental see Gum Disease; Tooth Decay
- Plasma-cell Myeloma see Multiple Myeloma
- Plasmacytoma see Multiple Myeloma
- Plastic and Cosmetic Surgery
- Platelet Disorders
- Pleural Disorders
- Pleural Effusion see Pleural Disorders
- Pleurisy see Pleural Disorders
- Plumbism see Lead Poisoning
- PMS see Premenstrual Syndrome
- Pneumococcal Infections
- Pneumoconiosis see Interstitial Lung Diseases
- Pneumocystis Infections
- Pneumonia
- Pneumonic Plague see Plague
- Pneumothorax see Collapsed Lung; Pleural Disorders
- Poison Ivy, Oak, and Sumac
- Poison Oak see Poison Ivy, Oak, and Sumac
- Poison Sumac see Poison Ivy, Oak, and Sumac
- Poisoning
- Poisons in the Home see Household Products
- Polio and Post-Polio Syndrome
- Poliomyelitis see Polio and Post-Polio Syndrome
- Pollen Allergy see Hay Fever
- Pollution see Air Pollution; Indoor Air Pollution; Water Pollution
- Polychondritis see Cartilage Disorders
- Polycystic Kidney Disease see Kidney Cysts; Kidney Diseases
- Polycystic Ovary Syndrome
- Polymyalgia Rheumatica
- Polymyositis see Myositis
- Poop see Bowel Movement
- Porphyria
- Positional Plagiocephaly see Craniofacial Abnormalities
- Post-COVID Conditions (Long COVID)
- Post-herpetic Neuralgia see Shingles
- Post-polio Syndrome see Polio and Post-Polio Syndrome
- Post-Traumatic Stress Disorder
- Post-Treatment Lyme Disease Syndrome see Lyme Disease
- Postoperative Care see After Surgery
- Postpartum Care
- Postpartum Depression
- Postural Orthostatic Tachycardia Syndrome see Autonomic Nervous System Disorders
- Posture see Guide to Good Posture
- Potassium
- PPS see Polio and Post-Polio Syndrome
- Prader-Willi Syndrome
- Preconception Care
- Prediabetes
- Prednisone see Steroids
- Preeclampsia see High Blood Pressure in Pregnancy
- Preemies see Premature Babies
- Pregnancy
- Pregnancy and AIDS see HIV and Pregnancy
- Pregnancy and Diabetes see Diabetes and Pregnancy
- Pregnancy and Health Problems see Health Problems in Pregnancy
- Pregnancy and HIV see HIV and Pregnancy
- Pregnancy and Medicines
- Pregnancy and Nutrition
- Pregnancy and Opioids
- Pregnancy and Substance Abuse see Pregnancy and Substance Use
- Pregnancy and Substance Use
- Pregnancy Complications see Health Problems in Pregnancy
- Pregnancy Hazards see Reproductive Hazards
- Pregnancy Loss see Miscarriage; Stillbirth
- Pregnancy, High-Risk see Health Problems in Pregnancy
- Pregnancy, Infections in see Infections and Pregnancy
- Pregnancy, Teen see Teenage Pregnancy
- Premature Babies
- Premature Birth see Preterm Labor
- Premature Ejaculation see Sexual Problems in Men
- Premature Labor see Childbirth Problems; Preterm Labor
- Premature Menopause see Menopause
- Premature Ovarian Failure see Primary Ovarian Insufficiency
- Premenstrual Syndrome
- Prenatal Care
- Prenatal Testing
- PrEP see HIV: PrEP and PEP
- Presbycusis see Hearing Disorders and Deafness
- Presbyopia see Refractive Errors
- Prescription Drug Abuse see Prescription Drug Misuse
- Prescription Drug Misuse
- Pressure Sores
- Preterm Labor
- Prevention see Healthy Living
- Primary Immunodeficiency Diseases see Immune System and Disorders
- Primary Ovarian Insufficiency
- Primary Peritoneal Cancer see Ovarian Cancer
- Primary Pulmonary Hypertension see Pulmonary Hypertension
- Prion Diseases see Creutzfeldt-Jakob Disease; Degenerative Nerve Diseases
- Privacy see Patient Rights; Personal Health Records
- PRK see Laser Eye Surgery
- Proctitis see Rectal Disorders
- Progeria see Genetic Disorders
- Progressive Supranuclear Palsy
- Prolactinoma see Pituitary Tumors
- Prostate Cancer
- Prostate Cancer Screening
- Prostate Diseases
- Prosthetic Limbs see Artificial Limbs
- Protective Eye Wear see Eye Injuries; Eye Wear
- Proteins see Dietary Proteins
- Proteinuria see Urinalysis
- Pruritus see Itching
- Pruritus Ani see Anal Disorders
- Pseudogout see Gout
- Psoriasis
- Psoriatic Arthritis
- Psychiatric Disorders see Mental Disorders
- Psychological Stress see Stress
- Psychotic Disorders
- Ptosis see Eyelid Disorders
- PTSD see Post-Traumatic Stress Disorder
- Puberty
- Pubic Lice
- Pulmonary Arterial Hypertension see Pulmonary Hypertension
- Pulmonary Embolism
- Pulmonary Emphysema see Emphysema
- Pulmonary Fibrosis
- Pulmonary Hypertension
- Pulmonary Rehabilitation
- Pulse see Vital Signs
- PXE see Connective Tissue Disorders
- Pyelonephritis see Urinary Tract Infections
- Pyrexia see Fever
Q
- Q Fever see Bacterial Infections
- Quackery see Health Fraud
- Quadriplegia see Paralysis
- Quitting Smoking
R
- Rabies
- Radiation Emergencies
- Radiation Exposure
- Radiation Therapy
- Radiography see X-Rays
- Radionuclide Scans see Nuclear Scans
- Radiosurgery see Radiation Therapy
- Radiotherapy see Radiation Therapy
- Radon
- Rape see Sexual Assault
- Rare Diseases
- Rashes
- Raynaud Phenomenon
- Raynaud's Disease see Raynaud Phenomenon
- Raynaud's Syndrome see Raynaud Phenomenon
- Reactive Arthritis see Infectious Arthritis
- Reading Problems see Learning Disabilities
- Recreational Safety see Sports Safety; Water Safety (Recreational)
- Rectal Bleeding see Gastrointestinal Bleeding
- Rectal Cancer see Colorectal Cancer
- Rectal Disorders
- Rectocele see Rectal Disorders
- Reflex Sympathetic Dystrophy see Complex Regional Pain Syndrome
- Reflux in Children
- Reflux in Infants
- Refractive Errors
- Regional Enteritis see Crohn's Disease
- Regional Ileitis see Crohn's Disease
- Rehabilitation
- Reiter's Syndrome see Infectious Arthritis
- Renal Cancer see Kidney Cancer
- Renal Dialysis see Dialysis
- Renal Disease see Kidney Diseases
- Renal Failure see Kidney Failure
- Renal Transplantation see Kidney Transplantation
- Repetitive Motion Injuries see Ergonomics
- Reproductive Hazards
- Residential Care see Assisted Living
- Respiratory Diseases see Lung Diseases
- Respiratory Failure
- Respiratory Syncytial Virus Infections
- Restless Legs
- Resuscitation Orders see Advance Directives
- Retinal Detachment
- Retinal Disorders
- Retinoblastoma see Eye Cancer
- Retinol see Vitamin A
- Rett Syndrome
- Reye Syndrome
- Rh Incompatibility
- Rhabdomyolysis see Muscle Disorders
- Rhabdomyosarcoma see Soft Tissue Sarcoma
- Rheumatic Fever see Streptococcal Infections
- Rheumatoid Arthritis
- Rheumatoid Spondylitis see Ankylosing Spondylitis
- Rib Injuries see Chest Injuries and Disorders
- Riboflavin see B Vitamins
- Rickets
- Ringworm see Tinea Infections
- RLS see Restless Legs
- Rocky Mountain Spotted Fever see Tick Bites
- Rodenticides see Pesticides
- Roentgen Rays see X-Rays
- Rohypnol see Club Drugs
- Root Canal see Tooth Disorders
- Rosacea
- Roseola see Viral Infections
- Rotator Cuff Injuries
- Rotavirus Infections
- RSV Infections see Respiratory Syncytial Virus Infections
- Rubella
- Rubeola see Measles
- Runaways see Homelessness and Health
- Ruptured Disk see Herniated Disk
- Rural Health Concerns
S
- SAD see Seasonal Affective Disorder
- Safe Opioid Use
- Safety
- Safety, Child see Child Safety
- Salivary Gland Cancer
- Salivary Gland Disorders
- Salmonella Infections
- Salt see Sodium
- Sarcoidosis
- Sarcoma, Ewing's see Bone Cancer
- Sarcoma, Soft Tissue see Soft Tissue Sarcoma
- SCA see Sudden Cardiac Arrest
- Scabies
- Scapula Injuries see Shoulder Injuries and Disorders
- Scarlet Fever see Streptococcal Infections
- Scars
- Schizophrenia
- School Health
- Sciatica
- SCID see Immune System and Disorders
- Scleroderma
- Scoliosis
- Screening Tests see Health Screening
- Screening, Newborn see Newborn Screening
- Seasickness see Motion Sickness
- Seasonal Affective Disorder
- Seasonal Allergies see Hay Fever
- Seborrheic Dermatitis see Dandruff, Cradle Cap, and Other Scalp Conditions
- Second Opinion see Patient Rights; Surgery; Talking With Your Doctor
- Secondhand Smoke
- Seizures
- Selenium see Minerals
- Self-Harm
- Semen see Testicular Disorders
- Seminoma see Testicular Cancer
- Senility see Dementia
- Seniors' Fitness see Exercise for Older Adults
- Seniors' Mental Health see Older Adult Mental Health
- Seniors' Nutrition see Nutrition for Older Adults
- Sepsis
- Septic Arthritis see Infectious Arthritis
- Septic Shock see Sepsis; Shock
- Septic Systems see Water Pollution
- Septicemia see Sepsis
- Severe Combined Immunodeficiency see Immune System and Disorders
- Sewage see Water Pollution
- Sex see Sexual Health
- Sexual Abuse of Children see Child Sexual Abuse
- Sexual Assault
- Sexual Health
- Sexual Health, Teen see Teen Sexual Health
- Sexual Problems in Men
- Sexual Problems in Women
- Sexually Transmitted Diseases see Sexually Transmitted Infections
- Sexually Transmitted Infections
- Shaken Baby Syndrome see Child Abuse
- Shaking Palsy see Parkinson's Disease
- Shellfish Allergy see Food Allergy
- Shingles
- Shock
- Shoes see Foot Health
- Shortness of Breath see Breathing Problems
- Shoulder Dislocation see Dislocated Shoulder
- Shoulder Impingement see Rotator Cuff Injuries
- Shoulder Injuries and Disorders
- Shy-Drager Syndrome see Autonomic Nervous System Disorders; Low Blood Pressure
- Sickle Cell Anemia see Sickle Cell Disease
- Sickle Cell Disease
- SIDS see Sudden Infant Death Syndrome
- Sigmoidoscopy see Colonoscopy
- Singultus see Hiccups
- Sinus Cancer see Nasal Cancer
- Sinus Infection see Sinusitis
- Sinusitis
- Sjogren's Disease see Sjogren's Syndrome
- Sjogren's Syndrome
- Skin Aging
- Skin Cancer
- Skin Conditions
- Skin Infections
- Skin Pigmentation Disorders
- Skin Rash see Rashes
- Skull Fractures see Head Injuries
- Skull Injuries see Head Injuries
- SLE see Lupus
- Sleep Apnea
- Sleep Disorders
- Sleep Hygeine see Healthy Sleep
- Sleep-disordered Breathing see Sleep Apnea
- Slipped Disk see Herniated Disk
- SMA see Spinal Muscular Atrophy
- Small Cell Lung Cancer see Lung Cancer
- Small for Gestational Age see Birth Weight
- Small Intestine Cancer see Intestinal Cancer
- Small Intestine Disorders
- Smallpox
- Smelling Disorders see Taste and Smell Disorders
- Smoke Inhalation see Inhalation Injuries
- Smokeless Tobacco
- Smoking
- Smoking and Youth
- Smoking Cessation see Quitting Smoking
- Smoking in Pregnancy see Pregnancy and Substance Use
- Smoking, Passive see Secondhand Smoke
- Snake Bites see Animal Bites
- Snoring
- SNRI see Antidepressants
- Snuff see Smokeless Tobacco
- Social Anxiety Disorder see Phobias
- Social Phobia see Phobias
- Sodium
- Soft Tissue Sarcoma
- Sore Throat
- South American Trypanosomiasis see Chagas Disease
- Spasmodic Torticollis see Dystonia
- Spasticity see Neuromuscular Disorders
- Specific Learning Disorder see Learning Disabilities
- Speech and Communication Disorders
- Speech and Language Problems in Children
- Sperm Donation see Assisted Reproductive Technology
- Spider Bites
- Spider Veins see Varicose Veins
- Spina Bifida
- Spinal Cord Diseases
- Spinal Cord Injuries
- Spinal Muscular Atrophy
- Spinal Stenosis
- Spine Injuries and Disorders
- Spit Tobacco see Smokeless Tobacco
- Spleen Diseases
- Splenic Diseaess see Spleen Diseases
- Splenomegaly see Spleen Diseases
- Splinters see Foreign Bodies
- Spondylitis, Ankylosing see Ankylosing Spondylitis
- Spondylolisthesis see Spine Injuries and Disorders
- Spontaneous Abortion see Miscarriage
- Sports Fitness
- Sports Injuries
- Sports Safety
- Spouse Abuse see Intimate Partner Violence
- Sprains and Strains
- Squint see Eye Movement Disorders
- SSRIs see Antidepressants
- Stammering see Stuttering
- Staphylococcal Infections
- Statins
- Statistics see Health Statistics
- Staying Healthy see Healthy Living
- STDs see Sexually Transmitted Infections
- Steele-Richardson-Olszewski Syndrome see Progressive Supranuclear Palsy
- Stein-Leventhal Syndrome see Polycystic Ovary Syndrome
- Stem Cell Transplantation see Stem Cells
- Stem Cells
- Stepfamilies see Family Issues
- Sterility see Infertility
- Sterilization see Tubal Ligation; Vasectomy
- Steroids
- Steroids, Anabolic see Anabolic Steroids
- Still's Disease see Juvenile Arthritis
- Stillbirth
- STIs see Sexually Transmitted Infections
- Stoma see Ostomy
- Stomach Ache see Abdominal Pain; Stomach Disorders
- Stomach Cancer
- Stomach Disorders
- Stomach Flu see Gastroenteritis
- Stomach Stapling see Weight Loss Surgery
- Stomach Ulcer see Peptic Ulcer
- Stool see Bowel Movement
- Strabismus see Eye Movement Disorders
- Strep Throat see Streptococcal Infections
- Streptococcal Infections
- Streptococcus Pneumoniae Infections see Pneumococcal Infections
- Stress
- Stress Incontinence see Urinary Incontinence
- Stroke
- Stroke Rehabilitation
- Stuttering
- Stye see Eyelid Disorders
- Subarachnoid Hemorrhage see Hemorrhagic Stroke
- Substance Abuse in Pregnancy see Pregnancy and Substance Use
- Substance use see Alcohol Use Disorder (AUD); Drug Use and Addiction; Drugs and Young People
- Sudden Cardiac Arrest
- Sudden Cardiac Death see Sudden Cardiac Arrest
- Sudden Infant Death Syndrome
- Sugar see Carbohydrates
- Sugar Diabetes see Diabetes; Diabetes Type 2
- Sugar Substitutes see Carbohydrates
- Suicide
- Sun Exposure
- Sunburn see Sun Exposure
- Sunscreen see Sun Exposure
- Sunstroke see Heat Illness
- Surgery
- Surgery, Plastic see Plastic and Cosmetic Surgery
- Surrogate see Assisted Reproductive Technology
- Swallowing Disorders
- Sweat
- Sweeteners, Artificial see Carbohydrates
- Swelling see Edema
- Swimmer's Ear see Ear Infections
- Swine Flu see H1N1 Flu (Swine Flu)
- Swollen Glands see Lymphatic Diseases
- Syncope see Fainting
- Syndrome X (Cardiac) see Angina
- Syndrome X (Metabolic) see Metabolic Syndrome
- Syphilis
- Syringomyelia
- Systemic Lupus Erythematosus see Lupus
- Systemic Sclerosis see Scleroderma
T
- TAA see Aortic Aneurysm
- Tachycardia see Arrhythmia
- Tachypnea see Breathing Problems
- Tailbone Disorders
- Talk to Your Doctor see Talking With Your Doctor
- Talking With Your Doctor
- Tanning
- Tardive Dyskinesia see Movement Disorders
- Taste and Smell Disorders
- Tattoos see Piercing and Tattoos
- Tay-Sachs Disease
- TB see Tuberculosis
- TBI see Traumatic Brain Injury
- Tears
- Teas, Herbal see Herbal Medicine
- Teas, Medicinal see Herbal Medicine
- Teen Depression
- Teen Development
- Teen Drug Abuse see Drugs and Young People
- Teen Health
- Teen Mental Health
- Teen Nutrition see Child Nutrition
- Teen Sexual Health
- Teen Smoking see Smoking and Youth
- Teen Violence
- Teenage Drinking see Underage Drinking
- Teenage Pregnancy
- Teens and Diabetes see Diabetes in Children and Teens
- Teeth see Tooth Disorders
- Telehealth
- Temperature see Vital Signs
- Temporal Arteritis see Giant Cell Arteritis
- Temporomandibular Disorders
- Temporomandibular Joint Dysfunction see Temporomandibular Disorders
- Tendinitis
- Tennis Elbow see Elbow Injuries and Disorders
- Tension Headache see Headache
- Terminal Care see End of Life Issues
- Terrorist Attacks see Biodefense and Bioterrorism
- Testicular Cancer
- Testicular Disorders
- Tetanus
- Tetanus, Diphtheria, and Pertussis Vaccines
- Thalassemia
- Thiamine see B Vitamins
- Thirst see Dehydration
- Thoracentesis see Pleural Disorders
- Thoracic Aortic Aneurysm see Aortic Aneurysm
- Thoracic Injuries see Chest Injuries and Disorders
- Thoracic Outlet Syndrome
- Three Day Measles see Rubella
- Throat Cancer
- Throat Disorders
- Thrombocytopenia see Platelet Disorders
- Thrombophlebitis see Blood Clots
- Thrush see Yeast Infections
- Thumb Injuries see Finger Injuries and Disorders
- Thymus Cancer
- Thyroid Cancer
- Thyroid Diseases
- Thyroid Tests
- Thyrotoxicosis see Hyperthyroidism
- TIA see Transient Ischemic Attack
- Tic Douleureux see Trigeminal Neuralgia
- Tick Bites
- Tickborne Diseases see Tick Bites
- Tinea Infections
- Tinea Pedis see Athlete's Foot
- Tinnitus
- Tiredness see Fatigue
- Tissue Donation see Organ Donation
- TMD see Temporomandibular Disorders
- TMJ see Temporomandibular Disorders
- Tobacco Smoking see Smoking
- Tobacco, Smokeless see Smokeless Tobacco
- Toddler Development
- Toddler Health
- Toddler Nutrition
- Toe Injuries and Disorders
- Toenails see Nail Diseases
- Tongue Cancer see Oral Cancer
- Tongue Disorders
- Tonsillectomy see Tonsillitis
- Tonsillitis
- Tonsils see Tonsillitis
- Tooth Decay
- Tooth Disorders
- Tornadoes
- Torticollis see Dystonia
- Tourette Syndrome
- Toxemia see High Blood Pressure in Pregnancy
- Toxic Shock Syndrome see Sepsis
- Toxoplasmosis
- TPN see Nutritional Support
- Trace Elements see Dietary Supplements
- Tracheal Disorders
- Tracheostomy see Critical Care; Tracheal Disorders
- Traffic Accidents see Motor Vehicle Safety
- Trans Fats see Dietary Fats
- Transfusion see Blood Transfusion and Donation
- Transgender Health see LGBTQIA+ Health
- Transient Ischemic Attack
- Transplantation see Organ Transplantation
- Traumatic Brain Injury
- Traveler's Health
- Treacher-Collins Syndrome see Craniofacial Abnormalities
- Tremor
- Tribal Health see American Indian and Alaska Native Health
- Trichomoniasis
- Trigeminal Neuralgia
- Triglycerides
- Triplets see Twins, Triplets, Multiple Births
- Trisomy 21 see Down Syndrome
- Tropical Medicine see Traveler's Health
- TSC see Tuberous Sclerosis
- Tsunamis
- Tubal Ligation
- Tubal Pregnancy see Ectopic Pregnancy
- Tuberculosis
- Tuberous Sclerosis
- Tularemia see Tick Bites
- Tumor see Cancer
- Tumors and Pregnancy
- Tumors, Benign see Benign Tumors
- Turner Syndrome
- Twins, Triplets, Multiple Births
- Type 1 Diabetes see Diabetes Type 1
- Type II Diabetes see Diabetes Type 2
- Typhoid Fever see Salmonella Infections
U
- Ulcer, Leg see Leg Injuries and Disorders
- Ulcerative Colitis
- Ulcers see Peptic Ulcer
- Ultraviolet Rays see Sun Exposure
- Umbilical Hernia see Hernia
- Uncommon Infant and Newborn Problems
- Underactive Thyroid see Hypothyroidism
- Underage Drinking
- Understanding Medical Research
- Underweight see Body Weight
- Undescended Testicle see Testicular Disorders
- Universal Precautions see Infection Control
- Upset Stomach see Indigestion
- Ureteral Cancer see Ureteral Disorders
- Ureteral Disorders
- Urethral Cancer see Urethral Disorders
- Urethral Disorders
- Urinalysis
- Urinary Bladder Cancer see Bladder Cancer
- Urinary Incontinence
- Urinary Tract Infections
- Urination see Urine and Urination
- Urine and Urination
- Urine Tests see Urinalysis
- Urostomy see Ostomy
- Urticaria see Hives
- Usher Syndrome
- Uterine bleeding see Vaginal Bleeding
- Uterine Cancer
- Uterine Cervix Disorders see Cervix Disorders
- Uterine Diseases
- Uterine Fibroids
- Uterine Leiomyomata see Uterine Fibroids
- Uterine Prolapse see Pelvic Floor Disorders
- UTI see Urinary Tract Infections
V
- Vaccination see Childhood Vaccines
- Vaccine Safety
- Vaccines
- Vaginal Bleeding
- Vaginal Cancer
- Vaginal Diseases
- Vaginal Infections see Vaginal Diseases
- Vaginal Yeast Infection see Vaginitis; Yeast Infections
- Vaginismus see Sexual Problems in Women
- Vaginitis
- Valley Fever
- Valvular Heart Diseases see Heart Valve Diseases
- Vancomycin-Resistant Enterococci see Antibiotic Resistance
- Vancomycin-Resistant Staphylococcus aureus see Antibiotic Resistance; Staphylococcal Infections
- Vaping see E-Cigarettes
- Varicella-Zoster Virus see Chickenpox
- Varicose Veins
- Vascular Diseases
- Vascular Headache see Headache; Migraine
- Vasculitis
- Vasectomy
- Vasovagal Syncope see Fainting
- vCJD see Creutzfeldt-Jakob Disease
- Vegan Diet see Vegetarian Diet
- Vegans see Vegetarian Diet
- Vegetarian Diet
- Vehicle Safety see Motor Vehicle Safety
- Veins see Varicose Veins; Vascular Diseases
- Venereal Disease see Sexually Transmitted Infections
- Venereal Warts see Genital Warts
- Venous Thrombosis see Blood Clots; Deep Vein Thrombosis
- Ventilators see Critical Care
- Verruca see Warts
- Vertigo see Dizziness and Vertigo
- Vestibular Diseases see Dizziness and Vertigo; Meniere's Disease
- Vestibular Schwannoma see Acoustic Neuroma
- Veterans and Military Family Health
- Veterans and Military Health
- Veterans Health see Veterans and Military Health
- Veterinary Medicine see Pet Health
- VHL see Von Hippel-Lindau Disease
- Violence see Child Abuse; Elder Abuse; Intimate Partner Violence; Teen Violence
- Viral Hepatitis see Hepatitis
- Viral Infections
- Vision Impairment and Blindness
- Vital Signs
- Vitamin A
- Vitamin B see B Vitamins
- Vitamin C
- Vitamin D
- Vitamin D Deficiency
- Vitamin E
- Vitamin K
- Vitamins
- Vitiligo
- VLDL Cholesterol
- Vocal Cord Problems see Voice Disorders
- Voice Disorders
- Voicebox Disorders see Throat Disorders; Voice Disorders
- Volcanoes
- Vomiting see Nausea and Vomiting
- Von Hippel-Lindau Disease
- von Recklinghausen's Disease see Neurofibromatosis
- von Willebrand's Disease see Platelet Disorders
- VRE see Antibiotic Resistance
- Vulvar Cancer
- Vulvar Disorders
- Vulvodynia see Vulvar Disorders
W
- Waldenstrom's Macroglobulinemia see Lymphoma
- Walkers see Mobility Aids
- Walking Pneumonia see Pneumonia
- Walking Problems
- Walleye see Eye Movement Disorders
- Warts
- Water see Drinking Water
- Water Pollution
- Water Safety (Recreational)
- Waterborne Diseases see Water Pollution
- Weariness see Fatigue
- Wegener's Granulomatosis see Granulomatosis with Polyangiitis
- Weight Control
- Weight Loss Surgery
- Weight Training see Exercise and Physical Fitness; Sports Fitness
- Weight-Loss Diet see Diets
- West Nile Virus
- Wheat Allergy see Food Allergy
- Wheelchairs see Mobility Aids
- Whiplash see Neck Injuries and Disorders
- Whooping Cough
- Wildfires
- Wilms Tumor
- Wilson Disease
- Windpipe Disorders see Tracheal Disorders
- Winter Weather Emergencies
- WNV see West Nile Virus
- Women's Health
- Women's Health Checkup
- Wounds and Injuries
- Wrinkles see Skin Aging
- Wrist Injuries and Disorders
Y
- Yeast Infections
- Yellow Fever see Hemorrhagic Fevers
- Yersinia Enterocolitica see Foodborne Illness
- Youth Violence see Teen Violence
Z
- Zika Virus
- Zinc see Minerals
- Zits see Acne
- Zoonoses see Animal Diseases and Your Health