What is Thoracic Outlet Syndrome?
Thoracic outlet syndrome is a condition whereby symptoms are produced from compression of nerves or blood vessels, or both, because of an inadequate passageway through an area (thoracic outlet) between the base of the neck and the armpit. The thoracic outlet is surrounded by muscle, bone, and other tissues. Any condition that results in enlargement or movement of the tissues of or near the thoracic outlet can cause the thoracic outlet syndrome. These conditions include muscle enlargement (such as from weight lifting), injuries, an extra rib from the neck at birth (cervical rib), weight gain, and tumors at the top of the lung (rare). Often no specific cause is found.

If you have symptoms of thoracic outlet syndrome, avoid carrying heavy bags over your shoulder because this depresses the collarbone and increases pressure on the thoracic outlet. You could also do some simple exercises to keep your shoulder muscles strong. Here are four that you can try; 10 repetitions of each exercise should be done twice daily:

* Corner Stretch - Stand in a corner (about 1 foot from the corner) with your hands at shoulder height, one on each wall. Lean into the corner until you feel a gentle stretch across your chest. Hold for 5 seconds.
* Neck Stretch - Put your left hand on your head, and your right hand behind your back. Pull your head toward your left shoulder until you feel a gentle stretch on the right side of your neck. Hold for 5 seconds. Switch hand positions and repeat the exercise in the opposite direction.
* Shoulder Rolls - Shrug your shoulders up, back, and then down in a circular motion.
* Neck Retraction - Pull your head straight back, keeping your jaw level. Hold for 5 seconds.

As with any exercise program, if any of these exercise cause pain, stop immediately!

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