HY USMLE Q #888 – Derm / Pharm

A 16-year-old boy is brought to the GP for a 1-week history of an irritating and itchy rash on this forehead. Two weeks ago, he commenced treatment for acne.

Which of the following is the most likely explanation for this patient’s findings?

  Benzoyl peroxide
  Clindamycin
  Isotretinoin
  Retinoic acid
  Tetracycline