What condition is characterized by intermittent contractions of the sternocleidomastoid muscle?

Spasmodic torticollis, also known as cervical dystonia, is a condition defined by involuntary muscle contractions that cause twisting and abnormal posture of the neck, specifically involving the sternocleidomastoid muscle. This muscle connects the sternum and clavicle to the mastoid process behind the ear, and its intermittent contractions result in the head being pulled to one side or rotated in an unnatural position.

Individuals with this condition often experience pain, discomfort, and a limited range of motion in the neck, which can be exacerbated by stress or fatigue. Treatment typically involves a combination of therapies, including physical therapy, medication, or in some cases, botulinum toxin injections to help reduce muscle spasms.

Understanding this condition is important for providing appropriate care and is particularly relevant for sports massage practitioners who may encounter clients with postural issues or discomfort emanating from this type of muscle dysfunction.