Saturday, March 29, 2014
Peripheral vs Central Sensitization in Pelvic PT
In pelvic pain rehabilitation, they often use what's called myofascial trigger point release. Before we've discussed peripheral and central sensitization. Here we see it being discussed as to the difference in treating chronic pelvic pain: "If a trigger point, by definition, is a hyperirritable spot in a taut band of skeletal muscle that may or not have referred pain, what then, is driving the soft tissue dysfunction? Some authors argue that the peripheral nervous system is at fault, while others point to the central nervous system as the driver. Peripherally, nociceptive input may sensitize dorsal horn neurons. Centrally, patients who have chronic pain will have larger areas of pain, described as being a result of higher central neural plasticity. This is a controversial topic, and the authors are quick to point out that experimental evidence is "sparse." While there is support in the literature for peripheral trigger points creating central sensitization, the article states that "…preliminary evidence suggests that central sensitization can also promote TrP activity." ...the summary points are that trigger points may be both a central and peripheral phenomena, and that chronicity of the condition may drive the focus of rehabilitation efforts. Specifically, the authors state that when a patient presents with peripheral sensitization, treatment should be directed towards inactivation of the trigger point, mobilizing joints and nerves, and functional activity. Patients who present with persistent pain may require more attention directed to the central system utilizing a multidisciplinary approach such as medications, medical and physical therapy management, and psychological therapy. Fear, anxiety, and the neuroscience approach to pain should be addressed."