Myofascial pain syndrome (MPS) is a chronic pain disorder that affects the muscles and connective tissues. Symptoms of MPS include localized muscle pain, tenderness, and stiffness. This pain can range from mild to severe and can last for months or even years. The most common cause of MPS is repetitive strain or overuse of a certain muscle group. Other possible causes include injury, stress, poor posture, or infection.

Diagnosis of MPS typically involves a thorough physical examination and review of the patient's medical history. Imaging tests such as X-rays or MRI scans may also be used to rule out other possible causes.

Treatment of MPS typically involves physical therapy, medications to reduce pain and inflammation, and lifestyle changes such as stress management and relaxation techniques. In some cases, surgery may be necessary to correct physical damage or structural abnormalities.