The Sternocleidomastoid muscle is a strap like muscle in your neck. It originates on the manubrium and medial clavicle. It inserts on the mastoid process of the temporal bone, and the superior nuchal line. This muscle acts alone to rotate the face to the opposite side and lift it two rod the ceiling. Together they flex the head and neck. Trigger points in sternal division of this muscle refer pain to the cheek and along the supraorbital ridge. The lowest points refer down to the sternum. The highest points refer to the occipital ridge and vertex of the head. Trigger points in the costal division refer to the into the forehead. The most superior trigger points refer into the ear, and can postural dizziness.