As many as five million women in the United States suffer from polycystic ovarian syndrome. The condition, which can begin as early as age 11, is caused by a hormonal imbalance in which the ovaries produce too many male hormones. PCOS often causes infertility.
The symptoms: PCOS can cause facial hair growth, irregular periods, acne, and cysts on the ovaries. And while you may experience hair loss on your scalp, you may notice more hair elsewhere on the body, Dr. Fusco says.
The tests: Your doctor is likely to do a blood test to look for elevated levels of testosterone and DHEAS (dehydroepiandrosterone), a by-product of testosterone.