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A

  1. Abdominal aortic aneurysm
  2. Abnormally excessive sweating (See: Hyperhidrosis)
  3. Abscess, Bartholin's (See: Bartholin's cyst)
  4. Absence seizure
  5. Acanthosis nigricans
  6. Achalasia
  7. Achilles tendinitis
  8. Achilles tendon rupture
  9. Acid reflux (See: Gastroesophageal reflux disease (GERD))
  10. Acid reflux, infant (See: Infant reflux)
  11. ACL injury
  12. Acne
  13. Acoustic neuroma
  14. Acquired immunodeficiency syndrome (See: HIV/AIDS)
  15. Acromegaly
  16. Actinic keratosis
  17. Acute coronary syndrome
  18. Acute febrile neutrophilic dermatosis (See: Sweet's syndrome)
  19. Acute inflammatory demyelinating polyneuropathy (See: Guillain-Barre syndrome)
  20. Acute kidney failure
  21. Acute liver failure
  22. Acute lymphoblastic leukemia (See: Acute lymphocytic leukemia)
  23. Acute lymphocytic leukemia
  24. Acute lymphoid leukemia (See: Acute lymphocytic leukemia)
  25. Acute myelogenous leukemia
  26. Acute radiation sickness (See: Radiation sickness)
  27. Acute radiation syndrome (See: Radiation sickness)
  28. Acute renal failure (See: Acute kidney failure)
  29. Acute respiratory distress syndrome (See: ARDS)
  30. Acute sinusitis
  31. Addiction, alcohol (See: Alcohol use disorder)
  32. Addiction, drug (See: Drug addiction (substance use disorder))
  33. Addiction, gambling (See: Compulsive gambling)
  34. Addiction, nicotine (See: Nicotine dependence)
  35. Addiction, tobacco (See: Nicotine dependence)
  36. Addison's disease
  37. Adenitis, mesenteric (See: Mesenteric lymphadenitis)
  38. Adenomyosis
  39. ADHD in children (See: Attention-deficit/hyperactivity disorder (ADHD) in children)
  40. ADHD, Adult (See: Adult attention-deficit/hyperactivity disorder (ADHD))
  41. Adhesive capsulitis (See: Frozen shoulder)
  42. Adjustment disorders
  43. Adnexal tumors
  44. Adolescent schizophrenia (See: Childhood schizophrenia)
  45. Adrenal cancer
  46. Adrenal gland tumor (See: Pheochromocytoma)
  47. Adrenal mass (See: Benign adrenal tumors)
  48. Adrenoleukodystrophy
  49. Adult attention-deficit/hyperactivity disorder (ADHD)
  50. Adult Still's disease
  51. Age spots (liver spots)
  52. Age-related macular degeneration, dry (See: Macular degeneration, dry)
  53. Age-related macular degeneration, wet (See: Macular degeneration, wet)
  54. Agnogenic myeloid metaplasia (See: Myelofibrosis)
  55. Agoraphobia
  56. AIDP (See: Guillain-Barre syndrome)
  57. AIDS/HIV (See: HIV/AIDS)
  58. Airplane ear
  59. Albinism
  60. Alcohol addiction (See: Alcohol use disorder)
  61. Alcohol intolerance
  62. Alcohol poisoning
  63. Alcohol use disorder
  64. Alcoholic hepatitis
  65. Alcohol-related birth defects (See: Fetal alcohol syndrome)
  66. Alcohol-related neurodevelopmental disorder (See: Fetal alcohol syndrome)
  67. Aldosteronoma (See: Primary aldosteronism)
  68. Allergic granulomatosis (See: Churg-Strauss syndrome)
  69. Allergic granulomatosis and angiitis (See: Churg-Strauss syndrome)
  70. Allergic reaction (See: Allergies)
  71. Allergic rhinitis (See: Hay fever)
  72. Allergies
  73. Allergy, dust mite (See: Dust mite allergy)
  74. Allergy, egg (See: Egg allergy)
  75. Allergy, food (See: Food allergy)
  76. Allergy, latex (See: Latex allergy)
  77. Allergy, milk (See: Milk allergy)
  78. Allergy, mold (See: Mold allergy)
  79. Allergy, nickel (See: Nickel allergy)
  80. Allergy, peanut (See: Peanut allergy)
  81. Allergy, penicillin (See: Penicillin allergy)
  82. Allergy, pet (See: Pet allergy)
  83. Allergy, shellfish (See: Shellfish allergy)
  84. Allergy, soy (See: Soy allergy)
  85. Allergy, wheat (See: Wheat allergy)
  86. Alopecia (See: Hair loss)
  87. Alpha-gal syndrome
  88. ALS (See: Amyotrophic lateral sclerosis (ALS))
  89. Alveolar osteitis (See: Dry socket)
  90. Alzheimer's disease
  91. Ambiguous genitalia
  92. Amblyopia (See: Lazy eye (amblyopia))
  93. Ameloblastoma
  94. Amenorrhea
  95. American trypanosomiasis (See: Chagas disease)
  96. Amnesia
  97. Amnesia, dissociative (See: Dissociative disorders)
  98. Amnesia, transient global (See: Transient global amnesia)
  99. Amnestic syndrome (See: Amnesia)
  100. Amniotic fluid embolism
  101. Ampullary cancer
  102. Amyloidosis
  103. Amyotrophic lateral sclerosis (ALS)
  104. Anal cancer
  105. Anal fissure
  106. Anal fistula
  107. Anal itching
  108. Anaphylaxis
  109. Anaplasmosis (See: Ehrlichiosis)
  110. Anemia
  111. Anemia, aplastic (See: Aplastic anemia)
  112. Anemia, Cooley's (See: Thalassemia)
  113. Anemia, iron deficiency (See: Iron deficiency anemia)
  114. Anemia, Mediterranean (See: Thalassemia)
  115. Anemia, sickle cell (See: Sickle cell anemia)
  116. Anemia, vitamin deficiency (See: Vitamin deficiency anemia)
  117. Aneurysm, abdominal aortic (See: Abdominal aortic aneurysm)
  118. Aneurysm, aortic (See: Thoracic aortic aneurysm)
  119. Aneurysm, brain (See: Brain aneurysm)
  120. Aneurysm, cerebral (See: Brain aneurysm)
  121. Aneurysms
  122. Angelman syndrome
  123. Angiitis (See: Vasculitis)
  124. Angina
  125. Angina pectoris (See: Angina)
  126. Angioedema and hives (See: Hives and angioedema)
  127. Angiofollicular lymph node hyperplasia (See: Castleman disease)
  128. Angiosarcoma
  129. Anhidrosis
  130. Ankle fracture (See: Broken ankle)
  131. Ankle sprain (See: Sprained ankle)
  132. Ankyloglossia (See: Tongue-tie (ankyloglossia))
  133. Ankylosing spondylitis
  134. Anorexia (See: Anorexia nervosa)
  135. Anorexia nervosa
  136. Anorgasmia in women
  137. Anterior cruciate ligament injury (See: ACL injury)
  138. Anterior prolapse (cystocele)
  139. Anthrax
  140. Antibiotic-associated colitis (See: Pseudomembranous colitis)
  141. Antibiotic-associated diarrhea
  142. Antiphospholipid syndrome
  143. Antisocial personality disorder
  144. Anxiety disorder, generalized (See: Generalized anxiety disorder)
  145. Anxiety disorder, social (See: Social anxiety disorder)
  146. Anxiety disorders
  147. Aortic aneurysm
  148. Aortic aneurysm (See: Thoracic aortic aneurysm)
  149. Aortic coarctation (See: Coarctation of the aorta)
  150. Aortic dissection
  151. Aortic valve disease
  152. Aortic valve regurgitation
  153. Aortic valve stenosis
  154. Aphasia
  155. Aphasia, primary progressive (See: Primary progressive aphasia)
  156. Aphthous ulcer (See: Canker sore)
  157. Apical ballooning syndrome (See: Broken heart syndrome)
  158. Aplastic anemia
  159. Apnea, sleep (See: Sleep apnea)
  160. Apnea, sleep (central) (See: Sleep apnea, central)
  161. Apnea, sleep (obstructive) (See: Sleep apnea, obstructive)
  162. Appendicitis
  163. ARDS
  164. Arenaviruses (See: Viral hemorrhagic fevers)
  165. Argentine hemorrhagic fever (See: Viral hemorrhagic fevers)
  166. Arm fracture (See: Broken arm)
  167. Arrhythmia (See: Heart arrhythmias)
  168. Arteriosclerosis / atherosclerosis
  169. Arteriovenous fistula
  170. Arteriovenous malformation
  171. Arteritis, giant cell (See: Giant cell arteritis)
  172. Arteritis, Takayasu's (See: Takayasu's arteritis)
  173. Arthritis
  174. Arthritis, basal joint (See: Thumb arthritis)
  175. Arthritis, degenerative (See: Osteoarthritis)
  176. Arthritis, gouty (See: Gout)
  177. Arthritis, infectious (See: Septic arthritis)
  178. Arthritis, juvenile idiopathic (See: Juvenile idiopathic arthritis)
  179. Arthritis, osteoarthritis (See: Osteoarthritis)
  180. Arthritis, psoriatic (See: Psoriatic arthritis)
  181. Arthritis, reactive (See: Reactive arthritis)
  182. Arthritis, rheumatoid (See: Rheumatoid arthritis)
  183. Arthritis, septic (See: Septic arthritis)
  184. Arthritis, thumb (See: Thumb arthritis)
  185. Asbestosis
  186. Ascariasis
  187. ASD (See: Atrial septal defect)
  188. Aspergillosis
  189. Asthma
  190. Asthma attack
  191. Asthma, childhood (See: Childhood asthma)
  192. Asthma, exercise-induced (See: Exercise-induced asthma)
  193. Asthma, occupational (See: Occupational asthma)
  194. Astigmatism
  195. Astrocytoma
  196. AT (See: Atrial tachycardia)
  197. Ataxia
  198. Atelectasis
  199. Atherosclerosis (See: Arteriosclerosis / atherosclerosis)
  200. Athlete's foot
  201. Atopic dermatitis (eczema)
  202. Atrial fibrillation
  203. Atrial flutter
  204. Atrial septal defect
  205. Atrial tachycardia
  206. Atrioventricular canal defect
  207. Atrioventricular nodal reentry tachycardia (AVNRT)
  208. Atrioventricular septal defect (See: Atrioventricular canal defect)
  209. Atrophic vaginitis (See: Vaginal atrophy)
  210. Attachment disorder (See: Reactive attachment disorder)
  211. Attention-deficit/hyperactivity disorder (ADHD) in children
  212. Attention-deficit/hyperactivity disorder in adults (See: Adult attention-deficit/hyperactivity disorder (ADHD))
  213. Atypical depression
  214. Atypical hyperplasia of the breast
  215. Autism spectrum disorder
  216. Autoimmune hepatitis
  217. Autoimmune pancreatitis
  218. Autonomic neuropathy
  219. Avascular necrosis
  220. Avian influenza (See: Bird flu (avian influenza))
  221. AVNRT (See: Atrioventricular nodal reentry tachycardia (AVNRT))
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