Subcategories
- Mesenteric lymphadenitis
- Merkel cell carcinoma
- Morton's neuroma
- Myelofibrosis
- Moles
- Milk allergy
- Mold allergy
- Macular degeneration, dry
- Macular degeneration, wet
- Mad cow disease
- Major depression
- Malaria
- Male breast cancer
- Male hypogonadism
- Male infertility
- Mallet toe and hammertoe
- Mammary duct ectasia
- Manic-depressive illness
- Marburg virus
- Marfan syndrome
- Mastalgia
- Mastitis
- MD
- Muscular dystrophy
- Measles
- Measles, German
- Medial tibial stress syndrome
- Mediterranean anemia
- Megacolon
- Megaloblastic anemia
- Melanoma
- Melanoma of the eye
- Membranous nephropathy
- Meniere's disease
- Meningioma
- Meningitis
- Meniscus tear
- Menopause
- Menstrual bleeding, excessive
- Menorrhagia
- Menstrual cramps
- Mental illness
- Meralgia paresthetica
- Mesenteric artery ischemia
- Mesothelioma
- Metabolic syndrome
- Metatarsalgia
- MGUS
- Monoclonal gammopathy of undetermined significance
- Microcephaly
- Microscopic colitis
- Microscopic hematuria
- Microvascular disease
- Middle ear infection
- Migraine
- Migraine with aura
- Mild cognitive impairment
- Mild cognitive impairment (MCI)
- Milia
- Miliaria
- Milk intolerance
- Miscarriage
- Mitral valve prolapse
- Mitral valve regurgitation
- Mitral valve stenosis
- Mittelschmerz
- Mixed connective tissue disease
- Molar pregnancy
- Molluscum contagiosum
- Mononucleosis
- Morning sickness
- Morphea
- Mosquito bites
- Mouth cancer
- MRSA infections
- MS
- Multiple sclerosis
- MSA
- Multiple system atrophy (MSA)
- Mucocutaneous lymph node syndrome
- Mucopolysaccharidosis type II
- Multiple myeloma
- Multiple personality disorder
- Multiple system atrophy
- Mumps
- Munchausen syndrome
- Muscle cramp
- Muscle strain
- Myasthenia gravis
- Myelodysplastic syndromes
- Myelomeningocele
- Myocardial infarction
- Myocardial ischemia
- Myocarditis
- Myoclonus
- Myofascial pain syndrome
- Myomas
- Myopia