USMLE® Step 1 style questions USMLE
A 70-year-old man comes to the office because of aching and stiffness, especially first thing in the morning. It began last month. He indicates that the symptoms occur in the distribution shown here:
Strength is 5/5 in all limbs. He has hypertension, and his medications are lisinopril and rosuvastatin. He says that aside from occasional headaches, he feels well. His temperature is 37.5°C (99.5°F), pulse 75/minute, respirations 14/minute, and blood pressure is 140/80. The only abnormal laboratory blood and urine findings are an ESR of 100 mm/hr and hemoglobin of 11 g/dL. Which of the following is the most likely diagnosis?