Thoracic Outlet Syndrome is a term that describes the abnormal compression, injury or irritation of the nerves and blood vessels between the lower neck and upper chest area. This injury can affect all ages and genders resulting from either repetitive injuries from work or sports, motor vehicular injuries, anatomical defects, poor posture or pregnancy. An individual with TOS may experience various symptoms depending on which structures are compressed, but common signs and symptoms include numbness or impaired circulation at the neck, shoulders and arms. They also may experience aches in the neck, shoulders and hands, arm pain and swelling, numbness and tingling sensation in the fingers and discoloration of the hands (Bluish). Thoracic Outlet Syndrome is treatable. If TOS is left untreated, complications could occur such as permanent arm swelling, permanent nerve damage or blood clots. If an individual continues to experience any of these signs or symptoms, they should be seen by a specialist in the field of Electrodiagnostic Medicine,, (EMG/NCS). For additional information, you can contact California Sports & Rehab Center. We can accommodate your needs in multiple locations in the Los Angeles and Orange County areas. Please visit us at or call our office at (310)-652-6060 for any questions!