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Tag: headache

Sternocleidomastoid (SCM), is it causing your headache?

Sternocleidomastoid Sternocleidomastoid (SCM) is an unusual muscle. It has the ability to create movements in many directions. It has two bellys the anterior and posterior, with each performing a slightly different role in terms of movement. The posterior portion performing more of the side bending movement and the anterior more of the head rotation/protraction. The […]