Associated conditions include: fibromyalgia interstitial cystitis, a chronic bladder condition TMJ, a condition that causes the jaw to lock inflammatory bowel disease migraine Endometriosis may also be associated with an increased risk of getting certain cancers, including: ovarian cancer endometrial cancer, a type of cancer that starts in the uterus non-Hodgkin's lymphoma, a cancer that starts in the body's lymphatic system melanoma, a type of skin cancer