![]() Women are more than three times more likely to be diagnosed with thoracic outlet syndrome than are men. There are several factors that seem to increase the risk of thoracic outlet syndrome, including: The onset of symptoms related to a traumatic accident often is delayed. A traumatic event, such as a car accident, can cause internal changes that then compress the nerves in the thoracic outlet. Drooping your shoulders or holding your head in a forward position can cause compression in the thoracic outlet area. There also may be a tight fibrous band connecting the spine to the rib that causes compression. The extra rib, known as a cervical rib, can compress nerves or blood vessels. Some people are born with an extra rib in the neck found above the first rib. The cause of the compression varies and can include: Thoracic outlet syndrome is often caused by compression of the nerves or blood vessels in the thoracic outlet, the area between the neck and shoulder. See your healthcare professional if you regularly experience any of the symptoms of thoracic outlet syndrome. A change in color in one or more of the fingers or the entire hand.Symptoms of arterial thoracic outlet syndrome can include: A change in the color of the hand or one or more fingers.Symptoms of venous thoracic outlet syndrome can include: Pain or aches in the neck, shoulder, arm or hand.Numbness or tingling in the arm or fingers.When nerves are compressed, symptoms of neurogenic thoracic outlet syndrome include: Thoracic outlet syndrome symptoms can vary depending on the type. The compression may cause injury to the artery resulting in a bulge, known as an aneurysm, or blood clot formation. It occurs when one of the arteries under the collarbone is compressed. This type of thoracic outlet syndrome occurs when one or more of the veins under the collarbone are compressed and damaged. The nerves control muscle movements and feeling in the shoulder, arm and hand. The nerves of the brachial plexus come from the spinal cord. In this type, a group of nerves called the brachial plexus is compressed. This is the most common type of thoracic outlet syndrome. Depending on the nerve branch that is compressed, it can also lead to tingling in the fourth or fifth fingers and clumsiness with hand movements.There are three types of thoracic outlet syndrome: It can cause achiness in the neck, arm, or hand. Neurogenic thoracic outlet: The most common and treatable form, this occurs when weak or tight muscles cause the brachial plexus (a nerve bundle that controls arm muscles and sensation) to become pinched or inflamed.It can impair the circulation in your arm and hand. It can cause numbness, coldness, pain, or sores in the hands or fingers. It is the least frequently seen form, but also the most serious. ![]() Arterial thoracic outlet: This occurs when a boney abnormality in the thoracic outlet area compresses the arteries that travel through it and limits their blood flow.The venous version can lead to swelling in the arms or hands, chest wall vein dilation, and a heavy sensation in the arm or hand muscles. Venous thoracic outlet: More acute in onset, this variety typically occurs when new or tiring arm movements cause damage to the veins in the lower neck or upper chest.
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