A very common muscle to become overloaded and damaged, and thus develop trigger points, is the pectoralis major muscle. This is the muscle that makes up the chest. It’s main functions are adduction and internal rotation at the shoulder. Poor rounded shoulder posture is a common cause of pec tightness and trigger points. trigger points in this muscle will produce pain felt into the front of the shoulder, the chest, and down the medial arm. If these symptoms occur in the left pec it can mimick heart pain. In women, these points can be a cause of breast pain and nipple hypersensitivity.
One of the most common causes of achy restless shoulder blades is trigger points in the rhomboid muscles. these muscles are responsible for pulling your shoulder blades back, and are often overloaded from poor shoulder posture. These muscles are very common areas to develop trigger points. Once there they will produce a persistent deep achy pain along the inside of the shoulder blade.
Piriformis syndrome is caused by a tight contracted piriformis muscle putting pressure on the sciatic nerve causing symptoms of tingling, numbness, and altered sensation. This muscle is often tight in people who sit for long periods of time. A common cause of this muscle being contracted and tight are trigger points. These trigger points are contracted knots within the belly of the muscle. These knots cause the muscle to become shortened. Trigger points will also cause pain on their own. This is usually felt as a deep achy pain in the glute and hip area, as well as in the back of the leg.
One of the most common sources of headache pain is trigger points in the neck muscles. These muscles are often overloaded from poor posture such as sitting in front of a computer or looking down at you phone for long periods of time. Trigger points that form in the upper traps are the most common trigger points in the body. They refer pain up the neck, behind the ear into the temple. The suboccipital muscles refer pain deep into the skull behind the eye. Sternocleidomastoid trigger points will refer pain to the top of the head and around the orbit of the eye. Trigger points need to be manually released to be resolved.
Myofascial pain syndrome is caused by a stimulus, such as muscle tightness, that sets off trigger points in your muscles. Factors that may increase your risk of muscle
trigger points include:
- Muscle injury. An acute muscle injury or continual muscle stress may lead to the development of trigger points. For example, a spot within or near a strained muscle may become a trigger point. Repetitive motions and poor posture also may increase your risk.
- Stress and anxiety. People who frequently experience stress and anxiety may be more likely to develop trigger points in their muscles. One theory holds that these people may be more likely to clench their muscles, a form of repeated strain that leaves muscles susceptible to trigger point
the quadratus lumborum muscle or “q.l.” Is a muscle located in your lower back. It originates on the iliac crest and iliolumbar ligament, and interns onto the last rib and transverse processes of the lumbar vertebrae. This muscle functions to stabilize the lumbar spine as well as laterally flex the spine. It will also hike the hip. Acting bilaterally it will extend the lumbar spine. Trigger points will often develop in this muscle. Trigger point referral will produce pain in the S.I. Joint and the lateral hip as well as the buttock. The pain referred into the S.I. Joint is often misdiagnosed as S.I. Joint dysfunction.
Trigger points in a number of muscles can refer pain into the head causing headaches. One of the most common muscles is the trapezius. This is a large diamond shaped muscle in the upper back and neck. Trigger points in the upper portion of this muscle are the most common trigger points in the body. These points will refer pain into the head, behind the ear and into the temple. Trigger points usually won’t resolve on their own, a therapeutic intervention is required to release the point.