When abnormal breast tissue develops in males, it is called gynecomastia. It is important to find out if the excess growth is breast tissue and not excess fat tissue lipomastia. The condition may occur in one or both breasts. It begins as a small lump beneath the nipple, which may be tender. One breast may be larger than the other. Over time the lump may become less tender and feel harder. Enlarged breasts in males are usually harmless, but may cause men to avoid wearing certain clothing or to not want to be seen without a shirt. This can cause significant distress, particularly in young men.
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Michelle Moscova does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Nipples even became a fashion accessory. The question even made it into a popular science book. The answer lies partly in how we develop in the womb. Very early in development, embryos of both sexes have primitive structures that can develop into either male or female reproductive organs or rarely into a bit of both. Several genes determine whether the baby ends up with either male or female reproductive organs. A gene called SRY sex-determining region Y on the short arm of the Y chromosome is considered the master gene. This is activated when the embryo is around seven weeks old.
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Type 1 — Puffy Nipple Characterized by a bulging, shiny areola and an over projecting nipple. Puffy nipple is caused by swelling of this excess breast tissue. This swollen tissue causes the areola to bulge, enlarge and become shiny.
