- C-reactive protein
- C-section
- C1 esterase inhibitor
- CA-125 blood test
- Caffeine in the diet
- Caffeine overdose
- Caladium plant poisoning
- Calcification
- Calcitonin blood test
- Calcium - ionized
- Calcium - urine
- Calcium and bones
- Calcium blood test
- Calcium carbonate overdose
- Calcium carbonate with magnesium overdose
- Calcium hydroxide poisoning
- Calcium in diet
- Calcium pyrophosphate arthritis
- Calcium supplements
- Calcium, vitamin D, and your bones
- Calcium-channel blocker overdose
- Calla lily poisoning
- Caloric stimulation
- Calorie count - Alcoholic beverages
- Calorie count - fast food
- Calorie count - sodas and energy drinks
- Campho-Phenique overdose
- Camphor overdose
- Campylobacter infection
- Campylobacter serology test
- Can you boost your metabolism?
- Can't sleep? Try these tips
- Canavan disease
- Cancer
- Cancer - resources
- Cancer and lymph nodes
- Cancer prevention: take charge of your lifestyle
- Cancer treatment - dealing with pain
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- Cancer treatment: dealing with hot flashes and night sweats
- Cancer treatment: fertility and sexual side effects in women
- Cancer treatments
- Candida auris infection
- Candida infection of the skin
- Candles poisoning
- Canker sore
- Capillary nail refill test
- Capillary sample
- Capsule endoscopy
- Caput succedaneum
- Carbohydrates
- Carbolic acid poisoning
- Carbon monoxide poisoning
- Carbuncle
- Carcinoid syndrome
- Cardiac ablation procedures
- Cardiac amyloidosis
- Cardiac arrest
- Cardiac catheterization
- Cardiac catheterization - discharge
- Cardiac event monitors
- Cardiac glycoside overdose
- Cardiac intravascular ultrasound
- Cardiac rehabilitation
- Cardiac tamponade
- Cardiogenic shock
- Cardiomyopathy
- Cardiovascular
- Cardioversion
- Caregiving - medication management
- Caregiving - resources - older adults
- Caregiving - taking your loved one to the doctor
- Caring for muscle spasticity or spasms
- Carotid artery disease
- Carotid artery stenosis - self-care
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- Carotid artery surgery - open
- Carotid duplex
- Carpal tunnel biopsy
- Carpal tunnel release
- Carpal tunnel syndrome
- Castor oil overdose
- Cat-scratch disease
- Cataract - adult
- Cataract removal
- Cataracts - what to ask your doctor
- Catecholamine blood test
- Catecholamines - urine
- Caterpillars
- Catheter-related UTI
- Caulking compound poisoning
- Causes and risks for obesity in children
- Cavernous sinus thrombosis
- CBC blood test
- CEA blood test
- Cedar leaf oil poisoning
- Celiac disease – sprue
- Celiac disease - nutritional considerations
- Celiac disease - resources
- Cell phones and cancer
- Cellulite
- Cellulitis
- Centipede
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- Central nervous system
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- Central venous line - infants
- Cerebral amyloid angiopathy
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- Cerebral palsy
- Cerebral palsy - resources
- Cerebrospinal fluid (CSF) collection
- Cerebrospinal fluid (CSF) culture
- Certified nurse-midwife
- Ceruloplasmin blood test
- Cervical cancer
- Cervical cancer - screening and prevention
- Cervical dysplasia
- Cervical MRI scan
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- Children's cancer centers
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- Chlamydia
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- Chlordiazepoxide overdose
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- Chlorinated lime poisoning
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- Cholangiocarcinoma
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- Cholestasis
- Cholesteatoma
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- Cholesterol and lifestyle
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- Choosing a doctor and hospital for your cancer treatment
- Choosing a primary care provider
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- Choosing the right health care provider for pregnancy and childbirth
- Choriocarcinoma
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- Chromatography
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- Chromium in diet
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- Chronic cholecystitis
- Chronic fatigue syndrome - resources
- Chronic granulomatous disease
- Chronic inflammatory demyelinating polyneuropathy
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- Chronic myelogenous leukemia (CML)
- Chronic obstructive pulmonary disease - adults - discharge
- Chronic obstructive pulmonary disease (COPD)
- Chronic pain - resources
- Chronic pancreatitis
- Chronic subdural hematoma
- Chronic thyroiditis (Hashimoto disease)
- Chylomicronemia syndrome
- Ciliary body
- Circumcision
- Cirrhosis
- Cirrhosis - discharge
- Citric acid urine test
- Claw foot
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- Clean catch urine sample
- Cleaning supplies and equipment
- Cleaning to prevent the spread of germs
- Clear liquid diet
- Cleft lip and palate
- Cleft lip and palate repair
- Cleft lip and palate repair - discharge
- Cleft palate - resources
- Cleidocranial dysostosis
- Clinitest tablets poisoning
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- Closed reduction of a fractured bone - aftercare
- Closed suction drain with bulb
- Cloth dye poisoning
- Cloudy cornea
- Clubbing of the fingers or toes
- Clubfoot
- Clubfoot repair
- Cluster headache
- CMV - gastroenteritis/colitis
- CMV blood test
- CMV pneumonia
- CMV retinitis
- CO2 blood test
- Coal worker's pneumoconiosis
- Coarctation of the aorta
- Cobalt poisoning
- Cocaine intoxication
- Cocaine withdrawal
- Coccidioides complement fixation
- Coccidioides precipitin test
- Cochlear implant
- Codeine overdose
- Cognitive behavioral therapy for back pain
- Cold intolerance
- Cold medicines and children
- Cold wave lotion poisoning
- Colds and flu – antibiotics
- Colds and the flu - what to ask your doctor - adult
- Colds and the flu - what to ask your doctor - child
- Colic and crying - self-care
- Colitis
- Collagen vascular disease
- Collapsed lung (pneumothorax)
- Collateral ligament (CL) injury - aftercare
- College students and the flu
- Colles wrist fracture - aftercare
- Coloboma of the iris
- Cologne poisoning
- Cologuard
- Colon cancer screening
- Colonoscopy
- Colonoscopy discharge
- Color blindness
- Color vision test
- Colorado tick fever
- Colorectal cancer
- Colorectal cancer - resources
- Colorectal polyps
- Colostomy
- Colposcopy - directed biopsy
- Comedones
- Common cold
- Common peroneal nerve dysfunction
- Common symptoms during pregnancy
- Communicating with patients
- Communicating with someone with aphasia
- Communicating with someone with dysarthria
- Community-acquired pneumonia in adults
- Compartment syndrome
- Complement
- Complement component 3 (C3)
- Complement component 4
- Complement fixation test to C burnetii
- Complex regional pain syndrome
- Comprehensive metabolic panel
- Compression fractures of the back
- Compression stockings
- Compulsive gambling
- Concomitant
- Concussion in adults - discharge
- Concussion in adults - what to ask your doctor
- Concussion in children - discharge
- Concussion in children - what to ask your doctor
- Condoms - male
- Conduct disorder
- Cone biopsy
- Confusion
- Congenital adrenal hyperplasia
- Congenital antithrombin III deficiency
- Congenital cataract
- Congenital cytomegalovirus
- Congenital diaphragmatic hernia repair
- Congenital fibrinogen deficiency
- Congenital heart defect - corrective surgery
- Congenital heart disease
- Congenital nephrotic syndrome
- Congenital platelet function defects
- Congenital protein C or S deficiency
- Congenital rubella
- Congenital syphilis
- Congenital toxoplasmosis
- Conjunctiva
- Conjunctivitis or pink eye
- Conscious sedation for surgical procedures
- Considering plastic surgery after a large weight loss
- Constipation - self-care
- Constipation - what to ask your doctor
- Constipation in infants and children
- Consumer rights and protections
- Contac overdose
- Contact dermatitis
- Contracture deformity
- Contraindication
- Controlling your high blood pressure
- Cooking utensils and nutrition
- Cooking without salt
- Coombs test
- COPD - control drugs
- COPD - managing stress and your mood
- COPD - quick-relief drugs
- COPD - what to ask your doctor
- COPD and other health problems
- COPD flare-ups
- Coping with cancer - finding the support you need
- Coping with cancer - hair loss
- Coping with cancer - looking and feeling your best
- Coping with cancer - managing fatigue
- Copper in diet
- Copper poisoning
- Cor pulmonale
- Cord blood testing
- Corneal injury
- Corneal transplant
- Corneal transplant - discharge
- Corneal ulcers and infections
- Corns and calluses
- Coronary angiography
- Coronary artery fistula
- Coronary artery spasm
- Coronary heart disease
- Coronavirus
- Coronavirus disease 2019 (COVID-19)
- Corticosteroids overdose
- Cortisol blood test
- Cortisol urine test
- Cosmetic breast surgery - discharge
- Cosmetic ear surgery
- Costochondritis
- Cough
- Coughing up blood
- Could you have low testosterone?
- Counting carbohydrates
- COVID-19 – what to do when you are sick
- COVID-19 antibody test
- COVID-19 symptoms
- COVID-19 vaccine - what you need to know
- COVID-19 vaccines
- COVID-19 vaccines - what to expect
- COVID-19 vaccines for children ages 6 months and older
- COVID-19 virus test
- Cow's milk - infants
- Cow's milk and children
- CPK isoenzymes test
- CPR
- CPR - adult and child after onset of puberty
- CPR - infant
- CPR - young child (age 1 year to onset of puberty)
- Cradle cap
- Cranial mononeuropathy III
- Cranial mononeuropathy III - diabetic type
- Cranial mononeuropathy VI
- Cranial sutures
- Craniopharyngioma
- Craniosynostosis
- Craniosynostosis repair
- Craniosynostosis repair - discharge
- Craniotabes
- Creatine phosphokinase test
- Creating a family health history
- Creatinine blood test
- Creatinine clearance test
- Creatinine urine test
- Creeping eruption
- Creutzfeldt-Jakob disease
- Cri du chat syndrome
- Cribs and crib safety
- Crigler-Najjar syndrome
- Crohn disease
- Crohn disease - children - discharge
- Crohn disease - discharge
- Croup
- Crush injury
- Crutches and children - proper fit and safety tips
- Crutches and children - sitting and getting up from a chair
- Crutches and children - stairs
- Crutches and children - standing and walking
- Crying in childhood
- Crying in infancy
- Cryoglobulinemia
- Cryoglobulins
- Cryotherapy for prostate cancer
- Cryotherapy for the skin
- Cryptococcosis
- Cryptosporidium enteritis
- CSF analysis
- CSF cell count
- CSF coccidioides complement fixation test
- CSF glucose test
- CSF leak
- CSF myelin basic protein
- CSF oligoclonal banding
- CSF smear
- CSF total protein
- CSF-VDRL test
- CT angiography – chest
- CT angiography - abdomen and pelvis
- CT angiography - arms and legs
- CT angiography - head and neck
- CT scan
- Culdocentesis
- Culture - colonic tissue
- Culture - duodenal tissue
- Culture-negative endocarditis
- Curvature of the penis
- Cushing disease
- Cushing syndrome
- Cushing syndrome due to adrenal tumor
- Cutaneous skin tag
- Cuticle remover poisoning
- Cuts and puncture wounds
- Cyanoacrylates poisoning
- Cyanotic heart disease
- Cyclothymic disorder
- Cyproheptadine overdose
- Cyst
- Cystic fibrosis
- Cystic fibrosis - nutrition
- Cystic fibrosis - resources
- Cystic hygroma
- Cysticercosis
- Cystinuria
- Cystitis - acute
- Cystitis - noninfectious
- Cystometric study
- Cystoscopy
- Cytochrome b5 reductase
- Cytologic evaluation
- Cytology exam of pleural fluid
- Cytology exam of urine
- Cytomegalovirus (CMV) infection
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