Fibromyalgia Syndrome (FMS) was recognised as a syndrome by the WHO in 1990. Sufferers from this complex syndrome may experience a wide variety of symptoms, ranging from headaches and fatigue to widespread muscular pain or irritable bowel syndrome. FMS is the second commonest condition encountered in clinics for the treatment of chronic pain. Because of its many presenting symptoms, different clinicians and therapists become involved in the treatment and management of FMS patients. Fibromyalgia Syndrome - a practitioner's guide to treatment aims to help clinicians and therapists involved in the treatment and management of FMS to better understand the syndrome, and to plan appropriate treatment and management.