Thoracic Outlet Syndrome (TOS) is a condition caused by compression of the nerves, arteries, or veins in the passageway from the lower neck to the armpit, known as the thoracic outlet. This compression can lead to a variety of symptoms depending on the structures involved, including pain in the shoulder and neck, numbness or tingling
Pain in the lower aspect of the neck can arise from a variety of causes. Often, it results from muscle strain due to poor posture, excessive computer use, or carrying heavy loads. Conditions such as cervical spondylosis, which involves age-related changes in the cervical spine, and herniated discs that press on nearby nerves can also
