Myofascial Pain Syndrome: What Is It and What Causes It Myofascial Pain Syndrome (MPS) is a chronic pain disorder where trigger points cause pain in the muscle and sometimes other, unrelated parts of the body as well. The symptoms typically start to show after a muscle has been repeatedly contracting with repetitive motions. These repetitive motions actually damage and tear the muscle fibers. While most people have experienced muscle pain and … [Read more...] about Myofascial Pain Syndrome: Causes, Symptoms, and Treatment