The trapezius and SCM are also determining factors in the shape and health of the spine. Furthermore, a chronic tension in the sternocleido-mastoid muscles on one side can actually change the shape of the back of the head, leaving it flat on one side because of the constant pull of the muscle on the temporal bones (the skull plates behind the ears). In every child I’ve treated on the autism spectrum, I have observed this distortion in the shape of the back of their head.51 (See Part Two for a technique to round the back of the head.)
