Case 1:

This 14-year-old girl who is being treated for acne presents for a follow-up visit. Acne has cleared on her chest and face, except for the forehead. She tried tretinoin, clindamycin/benzoyl peroxide, and a sulfur/sulfacetamide compound with limited results. Her menses are regular, and she does not have excessive facial or body hair.

What do you suspect?
A. Polycystic ovary syndrome.
B. Congenital adrenal hyperplasia.
C. Antibiotic-resistant Propionibacterium acnes.
D. Acne cosmetica.
E. Acne mechanica.

(answer on next page)