[Acne].
D000152:Acne Vulgaris / Q000188:drug therapy*; D000293:Adolescent; D006801:Humans; D014212:Tretinoin / Q000009:adverse effects / Q000627:therapeutic use*; D014801:Vitamin A / Q000627:therapeutic use
D014801:Vitamin A; D014212:Tretinoin
Aknee.