Background: Myofascial trigger points (MTrPs) are hyperirritable spots located in taut bands of muscle fibres. Electrophysiological studies indicate that abnormal electrical activity is detectable ...

Trigger point injections can help treat some forms of chronic muscle pain. After your injections, you may experience some mild tenderness or soreness, but you can go back to your normal activities ...

Myofascial pain syndrome (MPS) involves localized pain in one or more groups of muscles, like the lower back or neck. It may also lead to mood and sleep changes. MPS is different from fibromyalgia.