Thoracic outlet syndrome (TOS) is a group of disorders that occur when the blood vessels or nerves in the space between the collarbone and first rib (the thoracic outlet) become compressed. This can cause pain in the shoulders and neck and numbness in the fingers. There are three types: neurogenic (most common), venous, and arterial TOS.
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Understand key symptoms, causes, diagnosis options, and treatment pathways for Thoracic Outlet Syndrome (TOS). This overview is intended for patient awareness and should be followed by specialist consultation.
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Neurogenic TOS affects approximately 3–80 per 1,000 people; true prevalence uncertain.
Verified medical information source from NIAMS.
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