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What are the symptoms of thoracic outlet syndrome (TOS)?

Diana Meeks
Diana Meeks on behalf of Sigma Nursing
Family Practitioner

Symptoms of thoracic outlet syndrome vary, depending on what is being compressed. If nerves are being compressed, you will probably feel pain and tingling that starts in the neck and shoulder and spreads into the hand on the affected side. If a vein or artery is being compressed, this hampers the oxygen supply and may cause a bluish discoloration or lack of color in the affected hand. Pressure on a vein or artery also causes pain and swelling in the affected arm.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.