What causes gynecomastia?

Written by
September 16, 2013

Most cases of gynecomastia have no specific underlying cause. However, gynecomastia can be caused by testicular and other tumors, although this is rare. There are many drugs that can cause gynecomastia including blood pressure medications (angiotensin converting enzyme inhibitors), Valium, prostate medications, antacids such as Cimetidine, digitalis, antifungal drugs, chemotherapy agents, and marijuana, among others. Rare congenital disorders such as Klinefelter syndrome can also be responsible for gynecomastia, as can alcohol induced cirrhosis of the liver. Despite these potential contributing factors most cases of gynecomastia do not require a comprehensive work-up prior to treatment.

Most adolescents are driven to seek treatment for gynecomastia because of embarrassment in gym class or at the beach, and older men often because of self consciousness when wearing thin shirts during warm weather outdoor activities. Fortunately most cases of gynecomastia can be effectively treated and the results are permanent.


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