 Fibromyalgia Syndrome FMS afflicts 2 of the U.S. population and have huge individual and societal costs in terms of quality of life, social and work functioning, health care use, and lost productivity. Although single therapy approaches such as medication, graduated exercise, and Cognitive Behavioral Therapy CBT are well-established treatment approaches, the majority of FMS continue to report significant levels of pain and pain-related disability. Testing the efficacy of using combination therapies such and CBT with medication has considerable potential to maximize treatment response. Also, exploring the biological and psychological mechanisms underlying combination treatment may pave the way for developing new treatments for FMS sufferers. 