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Signs & Symptoms of a Strained Sternocleidomastoid Muscle

by
author image Julia Michelle
Julia Michelle has been writing professionally since January 2009. Her specialties include massage therapy, computer tech support, land and aquatic personal training, aquatic group fitness and Reiki. She has an Associate in Applied Science from Cincinnati State Technical and Community College in integrative medical massage therapy.
Signs & Symptoms of a Strained Sternocleidomastoid Muscle
A businesswoman is suffering from a headache. Photo Credit Blend Images/Blend Images/Getty Images

The sternocleidomastoid, or SCM, muscle originates on the breastbone and attaches to the collarbone and the temporal bone on the back of the skull. You have one SCM on each side of your neck. These muscles tilt and rotate your head to the right and left. Sudden movements, such as whiplash, can cause SCM injury.

Muscular Symptoms

A strained SCM can produce swelling and redness along the muscle, at the site of the injury. In severe cases, you also may see bruising along the path of the injury. If the strain results in a muscle spasm, you may notice a twitching or fluttering beneath the surface of the skin along the side of your neck. Applying ice for 20 minutes several times daily may relieve swelling and redness.

Functional Symptoms

You may feel a dull pain along the path of the injury, accompanied by sharp pain when turning or tilting your head. Stiffness, muscle fatigue and difficulty holding your head upright may also occur. Wearing a neck brace supports the weight of your head, temporarily relieving the stress on your SCM muscle. Over-the-counter nonsteroidal antiinflammatory drugs -- NSAIDs -- such as ibuprofen (Advil, Motrin) and naproxen (Naprosyn, Aleve) and analgesic rubs can relieve some of the pain associated with the strain.

Systemic Symptoms

SCM strain may cause headaches, especially at the muscle's attachment point at the base of your skull. Other symptoms may include face or head pain, ringing in your ears, dizziness and blurred vision. Pain and stiffness can disrupt your sleep, which can lead to irritability, fatigue, memory problems and difficulty concentrating. A neck brace will support your head while you sleep. You may also try sleeping on your back with a rolled towel under your neck instead of a pillow to support the natural curve at the base of your skull.

When to See a Doctor

Consult your doctor if you experience pain, numbness or tingling radiating down one or both arms, or muscle weakness in your arms or shoulders. While it may be difficult to move your head, talk to your doctor if you are unable to move your head at all, or if the pain worsens over time. Physical therapy and chiropractic interventions can help reduce symptoms caused by SCM strain.

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