Why we study menstrual pain?

Chronic visceral pelvic pain disorders cause substantial morbidity and cost upwards of 50 billion dollars in lost US wages and health care expenditures. Visceral pelvic pain conditions, such as endometriosis-associated pelvic pain, irritable bowel syndrome, bladder pain syndrome, are common (~25% prevalence in women), but predictable and may be preventable. The causes of visceral pain are poorly understood because diagnostic tests do not exist to distinguish pain due to prima