Clinical Challenge: An Asymptomatic Eruption on the Legs and Trunk

A 76-year-old man is referred for evaluation of an asymptomatic eruption that began on his legs about 2 weeks ago and is now spreading to his trunk. The rash developed shortly after he started a new oral medication for diabetes. He is also taking atorvastatin, furosemide, lisinopril, metformin, and metoprolol. Examination revealed multiple erythematous papules and pustules of the affected areas.