Fungal and Parasitic Infections USMLE Step 1 Practice Questions
55 board-style USMLE Step 1 questions in Infectious Disease. Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- USMLE Step 1 · medium25. A 35-year-old woman from Arizona presents with progressive dyspnea, cough, and pleuritic chest pain after recent desert hiking. Vital signs: HR 98/min, RR 22/min, BP 118/76 mmHg…
- USMLE Step 1 · medium26. A 28-year-old man from Arizona presents to the emergency department with a 3-week history of persistent cough, fever, and bilateral ankle swelling. He reports recent constructio…
- USMLE Step 1 · easy27. An 18-year-old female with a pet cat presents to clinic with a 3-week history of fever (38.5°C), malaise, and tender left axillary lymphadenopathy. She recalls a cat scratch on…
- USMLE Step 1 · hard28. A 24-year-old male construction worker from Brazil presents with a 3-month history of progressive facial swelling, difficulty swallowing, and painful oral ulcerations. He report…
- USMLE Step 1 · hard29. A 72-year-old man from Thailand presents to the clinic with a 6-week history of progressive dyspnea, productive cough with rust-colored sputum, and low-grade fever. He reports f…
- USMLE Step 1 · medium30. A 6-year-old girl presents to the emergency department with a 2-week history of fever, nonproductive cough, and progressive fatigue. Her family recently relocated from Michigan…
- USMLE Step 1 · medium31. A 45-year-old woman with COPD presents with hemoptysis, fever (38.5°C), and productive cough for 3 weeks. Vital signs show HR 102/min, RR 22/min, SpO2 88% on room air. Chest X-r…
- USMLE Step 1 · easy32. A 28-year-old woman with HIV/AIDS (CD4 <50 cells/μL) presents with severe headache, fever, and neck stiffness. Vital signs show temperature 39.2°C, blood pressure 98/62 mmHg, an…
- USMLE Step 1 · medium33. A 32-year-old male construction worker presents to urgent care with a 2-week history of fever (38.5°C), nonproductive cough, and progressive dyspnea. He works on a new housing d…
- USMLE Step 1 · medium34. A 54 year old man who emigrated from Bolivia presents with progressive dysphagia, constipation, and exertional dyspnea. Examination reveals an irregular pulse, and echocardiogra…
- USMLE Step 1 · medium35. A 35-year-old shepherd with chronic right upper quadrant pain presents with vital signs: BP 128/82, HR 88, RR 16, temp 37.2°C, SpO2 98% on room air. Ultrasound demonstrates a la…
- USMLE Step 1 · medium36. A 49 year old man presents with progressive fatigue and numbness in his feet. He frequently eats raw freshwater fish that he catches while camping. Laboratory studies show hemog…
- USMLE Step 1 · medium37. A 43-year-old man presents 10 days after consuming undercooked bear meat during a hunting trip with fever (38.9°C), myalgias, and diarrhea. On examination, he has periorbital ed…
- USMLE Step 1 · hard38. A 60 year old man who emigrated from rural Cambodia years ago is started on high dose prednisone for severe asthma. One month later he develops abdominal pain, cough, fever, and…
- USMLE Step 1 · medium39. A 46-year-old male gardener presents with a painless papule on the index finger that ulcerated over one week, followed by several nodules in a linear pattern along the forearm's…
- USMLE Step 1 · medium40. A 57 year old man with poorly controlled diabetes mellitus is admitted with diabetic ketoacidosis. Two days later he develops facial pain, headache, fever, and a black necrotic…
- USMLE Step 1 · hard41. A 63 year old asplenic man from Massachusetts presents in July with fever, malaise, and dark urine. He does not recall international travel. Laboratory studies show hemolytic an…
- USMLE Step 1 · hard42. A 32-year-old woman returns from Nigeria with 3 weeks of cyclic fevers (39.2°C), headache, and jaundice. She did not take malaria prophylaxis. Vital signs show HR 102/min, BP 11…
- USMLE Step 1 · hard43. A 46-year-old man from Egypt presents with painless gross hematuria, weight loss, and dysuria. Vital signs: BP 128/82, HR 92, RR 18, Temp 37.2°C, SpO2 98%. Cystoscopy reveals a…
- USMLE Step 1 · medium44. A 28 year old man originally from rural Latin America is brought to the emergency department after a generalized tonic clonic seizure. MRI of the brain shows several calcified a…
- USMLE Step 1 · medium45. A 31-year-old man with advanced HIV presents with profuse watery diarrhea for 3 weeks and 12-pound weight loss. Vital signs: BP 104/68, HR 102, RR 18, Temp 37.2°C, SpO2 98% on r…
- USMLE Step 1 · medium46. A 38-year-old man returns from Mexico presenting with fever (38.9°C), right upper quadrant pain, and 4 weeks of intermittent bloody diarrhea. Vital signs show BP 128/82, HR 102,…
- USMLE Step 1 · easy47. A 26 year old man presents with foul smelling greasy diarrhea, bloating, and abdominal cramps for 1 week after returning from a backpacking trip where he drank water from mounta…
- USMLE Step 1 · medium48. A 35 year old man with AIDS presents with headache, confusion, and a new onset seizure. CD4 count is 54 cells per microliter. MRI of the brain shows multiple ring enhancing lesi…