Endometriosis causes unusually long bleeding periods.
Studies have shown that endometriosis seems to have a genetic trait, and runs in families. The symptoms of endometriosis vary. One case of severe endometriosis may not show any symptoms while a mild case may yield severe symptoms. The most common symptoms are pelvic pain, pain with intercourse, painful urination, unusually heavy menstrual bleeding, bleeding prior to menstruation, and infertility. Diagnosis Endometriosis is initially diagnosed through an ultrasound of the pelvic region.