A 18-year-old male with acne visits the office. The patient has had minor facial acne for the previous three years, which has responded effectively to topical medications. His acne has gotten worse and spread to his neck and torso since he began college two months ago. It has gotten worse despite using topical medications. The guy practices outside for several hours three days a week because he is a baseball player for the university team. Additionally, he spends many hours each week swimming in an indoor pool. The patient has followed a dairy-free, low-glycemic-index diet since beginning college. Physical examination shows severe, nodulocystic acne on the face, neck, chest, and back. Which of the following most likely caused this patient's worsening acne?
A) Dairy-free diet
B) Exposure to chlorinated water
C) Low-glycemic-index diet
D) Methyltestosterone supplementation
E) Ultraviolet radiation
Correct Answer:
Verified
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