Thoracic outlet syndrome (TOS)

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Thoracic outlet syndrome (TOS) is a condition in which the nerves or blood vessels are squeezed tightly in a small space behind the collarbone (clavicle). This space is called the thoracic outlet. TOS can cause pain, numbness, or weakness in your shoulder, arm, or hand. Sometimes it causes swelling.

Symptoms typically occur with lifting the arms to shoulder level or other positions that put pressure on the nerves and vessels behind the collarbone. Treatment includes stretching and strengthening exercises as well as avoiding activities that cause symptoms. In rare cases, surgery is needed to relieve the pressure. If blood vessels are affected, medicines or procedures may be needed to treat blood clots.

La Enciclopedia de salud contiene información general de salud. No todos los tratamientos o servicios descritos son beneficios cubiertos para los miembros de Kaiser Permanente ni se ofrecen como servicios de Kaiser Permanente. Para obtener una lista de beneficios cubiertos, consulte su Evidencia de cobertura o Descripción resumida del plan. Para los tratamientos recomendados, consulte con su proveedor de atención médica.