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Sternocleidomastoid muscle. In human anatomy, the sternocleidomastoid muscle (/ËstÉËrnoÊËklaÉªdÉËmÃ¦sËtÉÉªd, -nÉ-, -doÊ-/), also known as sternomastoid and commonly abbreviated as 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 muscles.
The SCM Muscle in the Neck, it doesnât Typically Cause Neck Pain, But can cause a Slew of Neck Related Problems! To start off, the SCM muscle is actually named the sternocleidomastoid muscle. This muscle is responsible for specific neck and head motions and is split into two parts. The interesting thing is that neither part sends pain to the neck, however, it can often cause jaw pain or pain that travels up into the head. Besides headache-like pain and pain in the cheek or jaw region, it has also been linked to eye disturbances, sinus problems, inner ear problems, and even dizziness.