- Macroamylasemia
- Macroglossia
- Macrophage
- Macrosomia
- Macula lutea
- Macule
- Magnesium blood test
- Magnesium deficiency
- Magnesium in diet
- Magnetic resonance angiography
- Major depression
- Major depression with psychotic features
- Make peak flow a habit
- Make the most of your doctor visit
- Make time to move
- Making everyday tasks easier when you have arthritis
- Malabsorption
- Malaise
- Malaria
- Malathion poisoning
- Male pattern baldness
- Malignancy
- Malignant hypertension
- Malignant hyperthermia
- Malignant mesothelioma
- Malignant otitis externa
- Malignant teratoma of the mediastinum
- Mallet finger - aftercare
- Mallory-Weiss tear
- Malnutrition
- Malocclusion of teeth
- Mammogram
- Mammogram - calcifications
- Managing latex allergies at home
- Managing menopause at home
- Managing migraines at home
- Managing pain during labor
- Managing tension headaches at home
- Managing your blood sugar
- Managing your chronic back pain
- Managing your depression - teens
- Managing your weight gain during pregnancy
- Managing your weight with healthy eating
- Maple syrup urine disease
- Marfan syndrome
- Marijuana intoxication
- Marine animal stings or bites
- Mastectomy
- Mastectomy - discharge
- Mastectomy and breast reconstruction - what to ask your doctor
- Mastoidectomy
- Mastoiditis
- Mathematics disorder
- Maximizing your teaching moment
- McCune-Albright syndrome
- Measles
- Meatal stenosis
- Mechanical ventilator - infants
- Meckel diverticulectomy
- Meckel diverticulum
- Meclofenamate overdose
- Meconium aspiration syndrome
- Medial
- Medial epicondylitis - golfer's elbow
- Mediastinal tumor
- Mediastinitis
- Mediastinoscopy with biopsy
- Medical marijuana
- Medicine safety - Filling your prescription
- Medicine safety and children
- Medicine safety during your hospital stay
- Medicines for ADHD
- Medicines for back pain
- Medicines for osteoporosis
- Medicines for sleep
- Medicines, injections, and supplements for arthritis
- Mediterranean diet
- Meibomianitis
- Melanin
- Melanoma
- Melanoma of the eye
- Melasma
- Membranoproliferative glomerulonephritis
- Membranous nephropathy
- Memory loss
- Meniere disease
- Meniere disease - self-care
- Meningitis
- Meningitis - cryptococcal
- Meningitis - tuberculous
- Meningocele repair
- Meningococcal ACWY vaccine - what you need to know
- Meningococcal B vaccine - what you need to know
- Meningococcal meningitis
- Meningococcemia
- Meniscal allograft transplantation
- Meniscus tears - aftercare
- Menkes disease
- Menopause
- Mental status testing
- Menthol poisoning
- Meperidine hydrochloride overdose
- Meprobamate overdose
- Merbromin poisoning
- Mercuric chloride poisoning
- Mercuric oxide poisoning
- Mercury poisoning
- Merthiolate poisoning
- Mesenteric angiography
- Mesenteric artery ischemia
- Mesenteric venous thrombosis
- Metabolic acidosis
- Metabolic neuropathies
- Metabolic syndrome
- Metabolism
- Metabolite
- Metachromatic leukodystrophy
- Metal cleaner poisoning
- Metal polish poisoning
- Metastasis
- Metastatic brain tumor
- Metastatic pleural tumor
- Metatarsal fracture (acute) - aftercare
- Metatarsal stress fractures - aftercare
- Metatarsus adductus
- Methadone overdose
- Methamphetamine overdose
- Methanol poisoning
- Methanol test
- Methemoglobinemia
- Methemoglobinemia - acquired
- Methicillin-resistant Staphylococcus aureus (MRSA)
- Methyl salicylate overdose
- Methylene blue test
- Methylmalonic acid blood test
- Methylmalonic acidemia
- Methylmercury poisoning
- Metopic ridge
- MIBG scintiscan
- Microalbuminuria test
- Microcephaly
- Micrognathia
- Middle East Respiratory Syndrome (MERS)
- Midline venous catheters - infants
- Migraine
- Migraine - resources
- Mild to moderate COVID-19 - discharge
- Mildew remover poisoning
- Milia
- Milk-alkali syndrome
- Millipede toxin
- Mineral oil overdose
- Mineral spirits poisoning
- Minimal change disease
- Minimally invasive hip replacement
- Minor burns - aftercare
- Miscarriage
- Miscarriage - threatened
- Mistletoe poisoning
- Mitral stenosis
- Mitral valve prolapse
- Mitral valve regurgitation
- Mitral valve surgery - minimally invasive
- Mitral valve surgery - open
- Mittelschmerz
- MMR (measles, mumps, and rubella) vaccine - what you need to know
- MMRV (measles, mumps, rubella, and varicella) vaccine - what you need to know
- Mohs micrographic surgery
- Molluscum contagiosum
- Monitoring your baby before labor
- Mononeuropathy
- Mononucleosis
- Mononucleosis spot test
- Morning sickness
- Morning sickness
- Moro reflex
- Morphine overdose
- Morton neuroma
- Mosaicism
- Mouth and neck radiation - discharge
- Mouth sores
- Mouth ulcers
- Mouthwash overdose
- Movement - uncontrollable
- Movement - uncontrolled or slow
- Movement - uncoordinated
- Movement - unpredictable or jerky
- Moving a patient from bed to a wheelchair
- Mpox
- MRI
- MRI and low back pain
- MSG symptom complex
- Mucopolysaccharides
- Mucopolysaccharidoses
- Mucopolysaccharidosis type I
- Mucopolysaccharidosis type II
- Mucopolysaccharidosis type III
- Mucopolysaccharidosis type IV
- Mucormycosis
- Mucosa
- Multifocal atrial tachycardia
- Multiple endocrine neoplasia (MEN) I
- Multiple endocrine neoplasia (MEN) II
- Multiple mononeuropathy
- Multiple myeloma
- Multiple sclerosis
- Multiple sclerosis - discharge
- Multiple sclerosis - resources
- Multiple system atrophy - cerebellar subtype
- Multiple system atrophy - parkinsonian type
- Multiple vitamin overdose
- Mumps
- Munchausen syndrome by proxy
- Muscle aches
- Muscle atrophy
- Muscle biopsy
- Muscle cramps
- Muscle disorder
- Muscle function loss
- Muscle strain treatment
- Muscle twitching
- Muscular dystrophy
- Muscular dystrophy - resources
- Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)
- Myasthenia gravis
- Myasthenia gravis - resources
- Mycobacterial culture
- Mycoplasma pneumonia
- Myelin
- Myelodysplastic syndrome
- Myelofibrosis
- Myelomeningocele
- Myocardial biopsy
- Myocardial contusion
- Myocarditis
- Myocarditis - pediatric
- Myoglobin blood test
- Myoglobin urine test
- Myositis
- Myotonia congenita
- Myristica oil poisoning
- Myths about drinking alcohol
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