Causes Of Endometriosis

Retrograde Menstruation

Retrograde menstruation occurs when menstrual blood with endometrial cells fails to flow out of the body. Instead, it flows through the fallopian tubes and collects inside the pelvic cavity. The displaced cells will then adhere to the pelvic walls and organs. The tissue grows and continues to thicken and bleed each time a menstrual cycle occurs.

This type of endometriosis is the most common cause of severe pelvic pain during periods. While a small amount of cramping is normal, huge amounts of pain are not. Going through cramps so bad you can't leave the house or throwing up from pain and nausea are big warning signs you have endometriosis.

Continue reading to learn how genetics might play a role in endometriosis.