Symptoms can be divided into those that occur in both type of the condition, and those that only occur with vascular thoracic outlet syndrome.
Most symptoms of the condition affect the neck, the arms and hands and the shoulders and sometimes the chest and upper back. Pregnancy – joints and ligaments naturally loosen during pregnancy.Injury to the neck (especially whiplash in car accidents, but also consistently carrying around heavy bags or backpacks).stocking shelves, typing on a computer) or in certain sports, for example swimming, volleyball, golf and weightlifting. Overuse of the arms and/or shoulders - this is relatively common where heavy loads are frequently carried on the shoulders, or in jobs which require very repetitive movements of the arms (e.g.Congenital anatomical differences – a small number of people have an extra rib or particularly tight fibrous connective tissue in the area of the thoracic outlet which can place pressure on the nerves or blood vessels.The primary cause of the condition is injury or compression of the blood vessels and/or nerves in the thoracic outlet.
It is unusual for the condition to develop under the age of 20 or over the age of 50. The condition (sometimes simply referred to as 'TOS') affects around 1% of the population, with women over twice as likely to develop it than men. Thoracic outlet syndrome describes where either the blood vessels (vascular thoracic outlet syndrome) or the nerves (neurological thoracic outlet syndrome) become injured, entrapped or compressed in the thoracic outlet.īy far the most common of these is neurological thoracic outlet syndrome. Nerves, arteries and veins pass through the thoracic outlet – specifically the nerves in the brachial plexus, the subclavian artery and the subclavian vein. The thoracic outlet is a narrow passage located inside the body between the neck and the shoulder.
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