common
Thoracic outlet syndrome
Thoracic outlet (TOS) is a condition in which there is compression of the nerves, , or veins in the superior thoracic aperture, the passageway from the lower neck to the armpit, also known as the thoracic outlet. There are three main types: neurogenic, , and . The neurogenic type is the most common and presents with pain, weakness, paraesthesia, and occasionally loss of muscle at the base of the thumb. The venous type results in swelling, pain, and possibly a bluish coloration of the arm. The arterial type results in pain, coldness, and pallor of the arm.
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Symptoms — what it feels like
- ·Pain, weakness, loss of muscle at the base of the thumb, swelling, paleness, bluish coloration
Causes — why it happens
- ·Compression of the nerves, , or veins in the superior thoracic aperture (thoracic outlet), the passageway from the lower neck to the armpit
How it's found
- ·Nerve conduction studies, medical
Treatment
- ·Pain medication,
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See all of Blood Vessels →Plain-language summary adapted from Wikipedia. Not medical advice.