Widespread Chronic Pain Disorders: Conditions such as Myofascial pain syndrome, which, similar to fibromyalgia are characterized by chronic pain in the muscle tissues, Sometimes these pain disorders are the aftermath of injury. Pain medication, anti-inflammatory medication, and therapies aimed at relaxing the muscles tissues (such as massage, chiropractic, and some forms of acupuncture) have been reported as beneficial. The pain is often so severe that it disables the patient from proper functioning. It can last as short as a few days, to as long as many years. The disorder may begin at any age, and more women than men seem to experience it.