A previously healthy 9-year-old girl is brought to the physician because of a rash on her left arm for the past 7 days. Blood pressure is 150/95. Examination shows a yellow crusted rash with excoriations on the dorsal aspect of the left forearm. The remainder of the physical examination shows no abnormalities apart from a repetitive leftward movement of the upper lip. Urinalysis shows 2+ protein, 30 RBC/hpf, and 10 WBC/hpf. Which of the following is the most likely diagnosis?
Diffuse proliferative glomerulonephritis
Henoch-Schönlein purpura
Membranous glomerulonephritis
Proliferative glomerulonephritis
Rapidly progressive glomerulonephritis
Good explanation
I want NBME past Q Bank