Gynecomastia is a condition in which males develop enlarged breasts. The condition is caused by a hormone imbalance and usually happens during puberty or during adulthood. The most common symptoms are enlarged breast tissue on one side of the chest that can form one or more bulges just below the nipple or above the crease of the armpit. If you're looking for a male breast reduction in Denver, Skin Cafe’s gynecomastia experts can help.