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Free USMLE Step 1 questions, with explanations.
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- Blood & Immune A 5-year-old boy who recently recovered from an upper respiratory tract infection develops scattered petechiae and easy bruising. He is otherwise well. Physical examinat… Oct 25
- Gastrointestinal A 45-year-old woman comes to the emergency department because of a 1-day history of fever and constant right upper quadrant abdominal pain. She has had several previous … Oct 24
- Resp & Renal A 70-year-old man with longstanding congestive heart failure has had decreasing urine output and fatigue over 2 days. He stopped taking his medications a week ago. His b… Oct 23
- Repro & Endo A 22-year-old woman at 12 weeks' gestation by dates comes to the physician because of vaginal bleeding. Her uterus is larger than expected for gestational age. Serum bet… Oct 22
- Behavioral / Neuro A 65-year-old man develops progressive gait unsteadiness over several months. On examination he has an intention tremor and dysmetria on finger-to-nose testing on the ri… Oct 21
- Multisystem A 65-year-old man with diabetic ketoacidosis develops fever and proptosis of the left eye over 3 days. He is unable to move the left eye fully. Examination shows a black… Oct 20