Endometriosis has no known cause, can be painful

ASK THE DOCTORS

Dear Doctors: I've always had very painful periods, but my doctors said that was normal. When I saw a new gynecologist, she diagnosed me with endometriosis. I had surgery, and it changed everything. Can you please write about endometriosis? I think it could be helpful to a lot of women.

Dear Reader: Endometriosis is a sometimes-debilitating condition that is estimated to affect betwe…