Most common USMLE topics

This is a list of the 200 most common topics seen in the United States Medical Licensing Examination (USMLE) and other final medical exams. This list does not include pharmacology or toxicology topics.
Some of these diseases are relatively common, so all doctors require strong knowledge of them.

Many of these diseases are rarely encountered, but they demonstrate important concepts, so academics and senior doctors love to ask about them.

Types

1. Achalasia
2. Acid-Base imbalance
3. Acquired immune deficiency syndrome
4. Acromegaly
5. Acute hepatitis
6. Acute kidney injury 
7. Acute pancreatitis
8. Acute respiratory distress syndrome
9. Addison disease
10. Alzheimer disease
11. Amyloidosis
12. Amyotrophic lateral sclerosis
13. Anaemia
14. Aneurysms
15. Angina pectoris
16. Ankylosing spondylitis (HLA B27)
17. Aplastic anaemia
18. Aspergillosis
19. Asthma
20. Atherosclerosis
21. Atopic dermatitis
22. Atrial fibrillation 
23. Autoimmune hepatitis
24. Barrett oesophagus
25. Bronchiectasis
26. Bronchiolitis obliterans
27. Bullous pemphigoid
28. Calcium metabolism disorders
29. Candidiasis
30. Cardiac tamponade 
31. Cardiomyopathy
32. Cholecystitis
33. Cholelithiasis 
34. Chronic hepatitis
35. Chronic obstructive pulmonology disease 
36. Chronic pancreatitis
37. Chronic renal insufficiency
38. Cirrhosis
39. Coccidioidomycosis
40. Coeliac disease
41. Congenital heart disease
42. Coronary disease
43. Creutzfeldt-Jakob disease
44. Crohn disease
45. Cryptococcosis
46. Cushing syndrome
47. Cystic fibrosis
48. Dementia
49. Demyelinating diseases
50. Dermatomycosis
51. Dermatomyositis
52. Diabetes insipidus
53. Diabetes mellitus
54. Diarrhoea
55. Disseminated intravascular coagulation
56. Diverticular disease of gastrointestinal tract
57. Dwarfism 
58. Embolism and Thrombosis
59. Empyema
60. Encephalitis
61. Endocarditis
62. Enterocolitis
63. Eosinophilic granulomatosis with polyangiitis
64. Epilepsy
65. Erythema multiforme 
66. Essential hypertension
67. Exanthema
68. Familial hypercholesterolaemia
69. Fibroadenoma
70. Fibrocystic change
71. Frontotemporal dementia
72. Gastro-oesophageal reflux disease 
73. Giant cell arteritis
74. Gigantism
75. Glaucoma
76. Glomerulonephritis
77. Gout
78. Graves disease
79. Guillain-Barre syndrome
80. Haemochromatosis
81. Haemolytic anaemia – RH factor
82. Haemophilia A
83. Haemophilia B 
84. Heart failure
85. Henoch-Schoenlein purpura
86. Hepatic insufficiency
87. Hepatitis
88. Hereditary spherocytosis
89. Histoplasmosis
90. Hodgkin disease
91. Hydrocephalus
92. Hyperparathyroidism
93. Hyperpituitarism
94. Hyperthyroidism
95. Hypoparathyroidism 
96. Hypopituitarism
97. Hypothyroidism 
98. Hypovolaemic shock
99. Immune thrombocytopenia
100. Inappropriate ADH Syndrome
101. Infectious arthritis
102. Infectious mononucleosis
103. Infertility
104. Intracranial haemorrhages
105. Iron deficiency anaemia
106. Kidney diseases
107. Klinefelter syndrome
108. Leukaemia
109. Lyme disease
110. Lymphoma
111. Malabsorption syndromes
112. Malaria
113. Mastitis
114. Meningitis
115. Mesothelioma
116. Multiple myeloma
117. Multiple sclerosis
118. Muscular dystrophies
119. Myasthenia gravis
120. Myelophthisic anaemia
121. Myeloproliferative disorders
122. Myocardial infarction
123. Myocarditis
124. Neuroblastoma
125. Neurogenic shock
126. neuropathy, Peripheral
127. Obesity
128. Oesophagitis
129. Organ transplantation 
130. Osteoarthritis
131. Otitis media
132. Ovarian cysts
133. Paget disease of bone
134. Pancreatic pseudocyst
135. Pancreatitis
136. Parkinson disease
137. Peptic ulcer 
138. Pericardial effusion
139. Pericarditis
140. Pernicious anaemia 
141. Phaeochromocytoma
142. Pharyngitis
143. Pleural effusion
144. Pleuritis
145. Pneumoconiosis
146. Pneumonia
147. Pneumothorax
148. Poliomyelitis
149. Polyarteritis nodosa
150. Polycystic kidney disease
151. Polycystic ovary syndrome 
152. Polymyositis
153. Premature ovarian failure
154. Prion diseases
155. Primary biliary cholangitis
156. Primary sclerosing cholangitis
157. Psoriasis
158. Pulmonary embolism 
159. Pulmonary fibrosis
160. Pulmonary oedema 
161. Pyelonephritis
162. Retinal diseases
163. Retinoblastoma
164. Rheumatic fever 
165. Rheumatoid arthritis
166. Sarcoidosis 
167. Septic shock
168. Sexually transmitted diseases
169. Shock
170. Sickle cell anaemia
171. Sjögren syndrome
172. Stroke 
173. Syphilis
174. Systemic lupus erythematosus
175. Systemic sclerosis
176. Systemic vasculitis
177. Takayasu arteritis
178. Thalassaemia 
179. Thrombasthenia
180. Thrombocytopenia
181. Thrombotic thrombocytopenic purpura
182. Thyroiditis 
183. Transfusion reaction
184. Transient Ischaemic Attack
185. Transplantation
186. Tuberculosis
187. Turner syndrome
188. Ulcerative colitis
189. Urinary tract infection
190. Urethral obstruction
191. Urolithiasis
192. Urticaria
193. Vascular dementia
194. Vertigo
195. Viral hepatitis
196. Vitamin deficiency A, B1, B12, C, D
197. von Willebrand diseases 
198. Warts
199. Water-electrolyte imbalance