Thoracic outlet syndrome (patient information)
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What is Thoracic outlet syndrome?
Thoracic outlet syndrome is a combination of pain in the neck and shoulder, numbness and tingling of the fingers, and a weak grip. The thoracic outlet is the area between the rib cage and collar bone.
What are the symptoms of Thoracic outlet syndrome?
Symptoms of thoracic outlet syndrome may include:
- Pain, numbness, and tingling in the last three fingers and inner forearm
- Pain and tingling in the neck and shoulders (carrying something heavy may make the pain worse)
- Signs of poor circulation in the hand or forearm
- Weakness of the muscles in the hand
What causes Thoracic outlet syndrome?
Thoracic outlet syndrome is a rare condition.
Blood vessels and nerves coming from the spine or major blood vessels of the body pass through a narrow space near the shoulder and armpit on their way to the arms. As they pass by or through the collarbone (clavicle) and upper ribs, they may not have enough space. Pressure (compression) on these blood vessels or nerves can cause symptoms in the arms or hands. Problems with the nerves account for almost all cases of thoracic outlet syndrome.
Compression can be caused by an extra cervical rib (above the first rib) or an abnormal tight fibrous band connecting the spinal vertebra to the rib. Patients often have a history of injury to the area or overuse of the shoulder.
People with long necks and droopy shoulders may be more likely to develop this condition because of extra pressure on their nerves and blood vessels.
How do I know I have Thoracic outlet syndrome?
When you lift something, the arm may appear pale due to pressure on the blood vessels. Rarely, the arm may be smaller on the side of the symptoms. This is often present since birth (a congenital anomaly).
The diagnosis is typically made after the doctor takes a careful history and performs a physical examination. Sometimes tests are done to confirm the diagnosis, including the following:
Tests should also be performed to make sure there are no other problems, such as carpal tunnel syndrome or a damaged nerve due to problems in the cervical (neck) spine.
When to seek urgent medical care
Prevention of Thoracic outlet syndrome
Treatment options
Where to find medical care for Thoracic outlet syndrome
Directions to Hospitals Treating Thoracic outlet syndrome