M

  1. Mad cow disease, also known asCreutzfeldt-Jakob disease)
  2. Major depressive disorder, also known asDepression (major depressive disorder))
  3. Malaria
  4. Male breast cancer
  5. Male hypogonadism
  6. Male infertility
  7. Malignant fibrous histiocytoma, also known asUndifferentiated pleomorphic sarcoma)
  8. Malignant hyperthermia
  9. Malignant mesothelioma, also known asMesothelioma)
  10. Malignant peripheral nerve sheath tumors
  11. Mallet toe and hammertoe, also known asHammertoe and mallet toe)
  12. MALS, also known asMedian arcuate ligament syndrome (MALS))
  13. Mammary duct ectasia
  14. Manic-depressive illness, also known asBipolar disorder)
  15. Marfan syndrome
  16. Mastalgia, also known asBreast pain)
  17. Mastitis
  18. MCAD deficiency
  19. MD, also known asMuscular dystrophy)
  20. Measles
  21. Measles, German, also known asRubella)
  22. Medial epicondylitis, also known asGolfer's elbow)
  23. Medial tibial stress syndrome, also known asShin splints)
  24. Median arcuate ligament syndrome (MALS)
  25. Medication overuse headaches
  26. Mediterranean anemia, also known asThalassemia)
  27. Medulloblastoma
  28. Megacolon, also known asHirschsprung's disease)
  29. Megaloblastic anemia, also known asVitamin deficiency anemia)
  30. Melanoma
  31. Melanoma of the eye, also known asEye melanoma)
  32. Membranous nephropathy
  33. Meniere's disease
  34. Meningioma
  35. Meningitis
  36. Meniscus tear, also known asTorn meniscus)
  37. Menopause
  38. Menorrhagia (heavy menstrual bleeding)
  39. Menstrual bleeding, excessive, also known asMenorrhagia (heavy menstrual bleeding))
  40. Menstrual cramps
  41. Mental illness
  42. Meralgia paresthetica
  43. Merkel cell carcinoma
  44. Mesenteric ischemia
  45. Mesenteric lymphadenitis
  46. Mesothelioma
  47. Metabolic syndrome
  48. Metachromatic leukodystrophy
  49. Metastatic brain cancer, also known asBrain metastases)
  50. Metatarsalgia
  51. Methicillin-resistant staphylococcus aureus infection, also known asMRSA infection)
  52. MGUS, also known asMonoclonal gammopathy of undetermined significance (MGUS))
  53. Microcephaly
  54. Microscopic colitis
  55. Microscopic hematuria, also known asBlood in urine (hematuria))
  56. Migraine
  57. Migraine with aura
  58. Mild cognitive impairment (MCI)
  59. Miliaria, also known asHeat rash)
  60. Milk allergy
  61. Milk intolerance, also known asLactose intolerance)
  62. Miscarriage
  63. Mitral valve disease
  64. Mitral valve prolapse
  65. Mitral valve regurgitation
  66. Mitral valve stenosis
  67. Mittelschmerz
  68. Mixed connective tissue disease
  69. Molar pregnancy
  70. Mold allergy
  71. Moles
  72. Molluscum contagiosum
  73. Mono, also known asMononucleosis)
  74. Monoclonal gammopathy of undetermined significance (MGUS)
  75. Mononucleosis
  76. Mood disorders
  77. Morning sickness
  78. Morphea
  79. Morton's neuroma
  80. Mosquito bites
  81. Mouth cancer
  82. Movement disorders
  83. Moyamoya disease
  84. MRSA infection
  85. MS, also known asMultiple sclerosis)
  86. MSA, also known asMultiple system atrophy (MSA))
  87. Mucocutaneous lymph node syndrome, also known asKawasaki disease)
  88. Mucopolysaccharidosis type II, also known asHunter syndrome)
  89. Multiple endocrine neoplasia type 1, also known asMultiple endocrine neoplasia, type 1 (MEN 1))
  90. Multiple endocrine neoplasia, type 1 (MEN 1)
  91. Multiple myeloma
  92. Multiple sclerosis
  93. Multiple system atrophy (MSA)
  94. Multisystem inflammatory syndrome in children (MIS-C)
  95. Mumps
  96. Muscle cramp
  97. Muscle strains
  98. Muscular dystrophy
  99. Myasthenia gravis
  100. Myelodysplastic syndromes
  101. Myelofibrosis
  102. Myocardial infarction, also known asHeart attack)
  103. Myocardial ischemia
  104. Myocarditis
  105. Myoclonus
  106. Myofascial pain syndrome
  107. Myopia, also known asNearsightedness)
  108. Myxofibrosarcoma
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