Chronic pain is one of the most common reasons for patients to seek medical care. Chronic pain results in substantial economic losses and remains one of the most costly conditions in modern western society. In 1991, costs were estimated to be approximately $65 billion annually, comparable to the cost of treating diabetes. Persistent chronic pain and the use of advanced interventional and pharmacological treatments often leads to complex social and psychological maladaptations, health care overutilization, as well as many other substantial direct and indirect costs. Thus, the proper treatment of chronic pain involves intense multidisciplinary management, including pharmacological, behavioral, and psychological interventions. Few studies have assessed the total economic cost of chronic pain. However, many of the chronic pain treatments do not alleviate pain symptoms for most patients and lead to unsuccessful application of resources. The economic consequences of inadequately treated chronic pain translates into lost work days, overutilization of health care resources (excess hospitalizations, and surgical procedures and inappropriate medications) and other out-of-pocket patient expenses. Increasing emphasis on diagnosis and treatment of chronic pain places more importance on the need for efficient and coordinated management of patient with chronic pain. The management of chronic pain is remarkably complex and resource intensive. Therefore, a clear need exists for intensive pharmacoeconomic investigations, specifically evaluating costs related to chronic pain and the associated treatment modalities. Additionally, evaluation of the costs related to chronic pain would measure the economic burden of chronic pain, including an estimate of the amount that could potentially be saved if chronic pain patients are optimally managed.