Cramps occur when using the arm for activity. Symptoms of arterial TOS are pain, coldness, and a pale discoloration of the hand. Treatment to restore circulation is essential. When this occurs, the hand becomes cold, numb, painful, and discolored and you are in danger of losing your hand completely. The danger of the clot is that pieces of it will break off (called emboli) and travel down the arm to block the circulation to your hand. The artery may enlarge, forming an aneurysm just beyond the narrowing, and a clot will form in the wall of the aneurysm or the artery may remain narrowed and a clot will form inside the artery just beyond the narrowing. Once the artery has been narrowed, one of two things will happen. Find up-to-date information about accepted insurance plans. Almost all cases of arterial TOS are associated with having an extra rib (neck rib) or an abnormal first rib.Īrterial TOS is caused by a narrowing in the main artery to the arm (subclavian artery) which invariably is secondary to a congenital extra rib (cervical rib) which lies at the base of the neck, just above the highest rib in your chest, or it can be secondary to an abnormal first rib. Search on Castle Connolly for top doctors that specialize in Thoracic Outlet Syndrome near me. The symptoms of venous TOS are swelling in your entire arm, plus pain and dark discoloration.Īrterial TOS, is the rarest type, occurring in only one percent of cases, and it is due to disease in the subclavian artery. Its underlying cause is a congenital narrowing of the space through which the major arm vein (subclavian vein) passes from the shoulder area into the heart. Venous TOS is commonly due to strenuous use of the arm and shoulder. Three to four percent of cases of TOS are due to obstruction or clotting of the main vein to the arm - the subclavian vein - a condition called venous TOS. Unfortunately, the symptoms of neurogenic TOS can be vague and non-specific. Another common occurrence is pain that starts in your shoulder and runs down your arm, as well as pain in your fingertips. Neck pain and headaches in the back of your head are also frequent symptoms. Also common is a tired feeling in your arm, which is made worse by working with your arms raised over your head. In neurogenic TOS, the symptoms are pain, numbness, tingling, and/or weakness in the arm and hand. The symptoms are due to scar tissue formation in neck muscles (called scalene muscles). Slipping and falling on floors or ice, or repetitive stress from working on assembly lines or keyboards are the next most common causes. Neurogenic TOS is most often the result of neck trauma such as a whiplash injury. Ninety-five percent of cases of TOS are due to compression of the nerves to the arm (called neurogenic TOS). There are three types of Thoracic Outlet Syndrom: Neurogenic, Venous and Arterial.
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