Korean J Dermatol.  2004 May;42(5):643-645.

A Case of Unilateral Idiopathic Gynecomastia Aggravated by Low-dose Finasteride (1mg/day, Propecia(R))

Affiliations
  • 1Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea. dermis@kebi.com

Abstract

Low dose finasteride(1mg/d, Propecia(R)) has been widely used as an effective treatment for male androgenetic alopecia. Finasteride is an inhibitor of 5-alpha-reductase, the enzyme responsible for testosterone metabolism to dihydrotestosteron(DHT). We report a case of painful, unilateral idiopathic gynecomastia aggravated by low dose finasteride for male androgenetic alpopecia. A 23-year-old man started treatment with Propecia(R), 1 mg per day. Two months later he presented with a painful enlargement of his right breast. Treatment was stopped and two months later the clinical manifestration had disappeared.

Keyword

androgenetic alopecia; finasteride; gynecomastia

MeSH Terms

Alopecia
Breast
Finasteride*
Gynecomastia*
Humans
Male
Metabolism
Testosterone
Young Adult
Finasteride
Testosterone
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