M

• Macular degeneration, dry
• Macular degeneration, wet
• Mad cow disease (See: Creutzfeldt-Jakob disease)
• Major depression (See: Depression)
• Malaria
• Male breast cancer
• Male hypogonadism
• Male infertility
• Male yeast infection
• Mallet toe and hammertoe (See: Hammertoe and mallet toe)
• Mammary duct ectasia
• Manic-depressive illness (See: Bipolar disorder)
• Marburg virus (See: Ebola virus and Marburg virus)
• Marfan syndrome
• Mastalgia (See: Breast pain)
• Mastitis
• MD (See: Muscular dystrophy)
• Measles
• Measles, German (See: Rubella)
• Medial tibial stress syndrome (See: Shin splints)
• Mediterranean anemia (See: Thalassemia)
• Megacolon (See: Hirschsprung's disease)
• Megaloblastic anemia (See: Vitamin deficiency anemia)
• Melanoma
• Melanoma of the eye (See: Eye melanoma)
• Membranous nephropathy
• Meniere's disease
• Meningioma
• Meningitis
• Meniscus tear (See: Torn meniscus)
• Menopause
• Menorrhagia
• Menstrual bleeding, excessive (See: Menorrhagia)
• Menstrual cramps
• Mental illness
• Meralgia paresthetica
• Merkel cell carcinoma
• Mesenteric artery ischemia (See: Intestinal ischemia)
• Mesenteric lymphadenitis
• Mesothelioma
• Metabolic syndrome
• Metatarsalgia
• MGUS (See: Monoclonal gammopathy of undetermined significance)
• Microcephaly
• Microscopic colitis
• Microscopic hematuria (See: Blood in urine (hematuria))
• Microvascular disease (See: Small vessel disease)
• Middle ear infection (See: Ear infection (middle ear))
• Migraine
• Migraine with aura
• Migraine, ocular
• Mild cognitive impairment (See: Mild cognitive impairment (MCI))
• Mild cognitive impairment (MCI)
• Milia
• Miliaria (See: Heat rash)
• Milk allergy
• Milk intolerance (See: Lactose intolerance)
• Miscarriage
• Mitral valve prolapse
• Mitral valve regurgitation
• Mitral valve stenosis
• Mittelschmerz
• Mixed connective tissue disease
• Molar pregnancy
• Mold allergy
• Moles
• Molluscum contagiosum
• Monoclonal gammopathy of undetermined significance
• Mononucleosis
• Morning sickness
• Morphea
• Morton's neuroma
• Mosquito bites
• Mouth cancer
• MRSA infection
• MS (See: Multiple sclerosis)
• MSA (See: Multiple system atrophy (MSA))
• Mucocutaneous lymph node syndrome (See: Kawasaki disease)
• Mucopolysaccharidosis type II (See: Hunter syndrome)
• Multiple myeloma
• Multiple personality disorder (See: Dissociative disorders)
• Multiple sclerosis
• Multiple system atrophy (See: Multiple system atrophy (MSA))
• Multiple system atrophy (MSA)
• Mumps
• Munchausen syndrome
• Muscle cramp
• Muscle strain (See: Sprains and strains)
• Muscular dystrophy
• Myasthenia gravis
• Myelodysplastic syndromes
• Myelofibrosis
• Myelomeningocele (See: Spina bifida)
• Myocardial infarction (See: Heart attack)
• Myocardial ischemia
• Myocarditis
• Myoclonus
• Myofascial pain syndrome
• Myomas (See: Uterine fibroids)
• Myopia (See: Nearsightedness)