RT Book, Section A1 Liebano, Richard E. A2 Bellew, James W. A2 Michlovitz, Susan L. A2 Nolan Jr., Thomas P. SR Print(0) ID 1180667708 T1 Mechanisms of Pain and Use of Therapeutic Modalities T2 Modalities for Therapeutic Intervention, 6e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780803645639 LK fadavispt.mhmedical.com/content.aspx?aid=1180667708 RD 2024/10/07 AB The International Association for the Study of Pain defines pain as "an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage" (www.iasp-pain.org).1 Pain is the most common complaint and the most prevalent symptom that requires intervention among patients in rehabilitation programs. Perception of pain is influenced by a variety of factors such as cultural differences, motivation, emotional states, and past experiences with pain.2 Although clinicians often treat patients with pain with the goal of reducing or eliminating pain, it is important to note that pain is an important protective sensation. In this manner, pain can serve as an indicator or pathology, physical stress, or injury. Therefore, when pain is present, treatment should be targeted to solve the underlying cause.