Neck pain headaches or face pain ear and sinus symptoms Visual disturbances balance problems sternocleidomastoid muscle


The SCM is a paired muscle in the superficial layers of the side of the neck. It is one of the largest and most superficial cervical muscle. The name sternocleidomastoid tells us that this muscle attaches from the sternum and clavicle to the mastoid process of the temporal bone.

The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck 
The muscle tends to be overactive in many people we see. It is commonly recruited to help stabilize the neck / head when we adopt poor postures and positions (forward head posture).

It is also an accessory muscle to breathing along with the scalene so having poor breathing patterns and habits will cause this muscle to overwork all day long and develop too much tension and trigger points.


The SCM trigger points  can cause a variety of symptoms including headache and face pain, balance problems, visual disturbances, ear and sinus symptoms, and more body wide symptoms. They also can initiate trigger points in the jaw joint muscles. Additionally, the muscle can cause biomechanical problems in the cervical spine. It is the only muscle that creates such wide spread problems

The SCM is innervated by the accessory nerve which is content of the jugular foramen, where the accessory nerve can get compressed or entrapped. If so, it can lead to hypertension in the SCM. That’s why it is very important to treat (release) this foramen to give the  nerve enough space to work properly shoe several myofascial treatment techniques for the SCM.

If you suffer from headaches, or directly after any muscle release via fascial soft tissue wort, it is very important to stay well hydrated.

Compose and written by Orathai Lekgnam
Applied Traditional Thai Medicine staff at Japanese Shinkyu Clinic

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