What is polycystic ovary syndrome (PCOS)? Polycystic ovary syndrome (PCOS) is a set of symptoms caused by a problem with a woman’s hormones. It affects the ovaries. These are the small organs that ...

Colleen Murphy is a senior editor at Health. She has extensive experience with interviewing healthcare providers, deciphering medical research, and writing and editing health articles in an ...

I had one removed from my head when I was about eight-years-old and didn't have another until two years ago. Now I have three that have come up on my head beneath my hair.

A team of around 30 medical specialists huddled over a 41-year-old woman earlier this year in Los Angeles as they carefully delivered her nearly full-term baby, who had unknowingly developed behind a ...