A 24-year-old man seeks evaluation of a rash on his penis; it is associated with mild burning on urination. Workup for gonococcal and chlamydial infection is negative. He is otherwise healthy.
What is the most likely cause of the rash?
A. Candida balanitis.
B. Herpes simplex.
C. Lichen planus.
D. Zoon balanitis.
E. Bowenoid papulosis.
1. Pastar Z, Rados J, Lipozencic J, et al. Zoon plasma cell balanitis: an overview and role of histopathology. Acta Dermatovenerol Croat. 2004;12:268-273.