Gynaecomastia is a common condition amongst men which begins during puberty, where firm, tender breast tissue grows under the nipples. It is usually caused by an imbalance of hormones, and normally disappears by the age of 18 – 20 without treatment.
In rare cases, gynaecomastia may be caused by prescription drugs such as anabolic steroids; over-the-counter medicines; illegal drugs; tumours or disease. In some cases, tests are needed to ascertain the cause and rule out any further underlying medical implications.
Men who are self-conscious because they have over-developed or enlarged breast tissue (usually caused by being overweight, or having lost weight), or men who suffer from back and neck ache because their “breasts” are too heavy can benefit from male breast reduction surgery.
Some men and boys have fat on their chests that makes it look like they have breasts. This condition is called pseudogynecomastia (false gynaecomastia). It is not the same thing. Gynecomastia may be caused by: