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Sensitive areas of tight muscle fibers can form in your muscles after injuries or overuse. These sensitive areas are called trigger points. A trigger point in a muscle can cause strain and pain throughout the muscle. When this pain persists and worsens, doctors call it myofascial pain syndrome. 1  Symptoms.
Myofascial pain syndrome (MPS) is a fancy way to describe muscle pain. It refers to pain and inflammation in the body's soft tissues. MPS is a chronic condition that affects the fascia (connective tissue that covers the muscles). It may involve either a single muscle or a muscle group.verexertion, pinched nerves -- all sorts of joint and muscle problems can cause neck and shoulder pain. Click here to read more about how shoulder and neck pain are diagnosed and treated. A car accident or any abrupt jerking motion to the head and neck -- and suddenly you have serious neck, shoulder, back pain.