What is (are) Carpal Tunnel Syndrome ?
Carpal tunnel syndrome (CTS) occurs when the median nerve, which runs from the forearm into the palm of the hand, becomes pressed or squeezed at the wrist. The carpal tunnel is a narrow, rigid passageway of ligament and bones at the base of the hand that houses the median nerve and the tendons that bend the fingers. The median nerve provides feeling to the palm side of the thumb and to most of the fingers. Symptoms usually start gradually, with numbness, tingling, weakness, and sometimes pain in the hand and wrist. People might have difficulty with tasks such as driving or reading a book. Decreased hand strength may make it difficult to grasp small objects or perform other manual tasks. In some cases no direct cause of the syndrome can be identified. Contributing factors include trauma or injury to the wrist that causes swelling, thyroid disease, rheumatoid arthritis, and fluid retention during pregnancy. Women are three times more likely than men to develop carpal tunnel syndrome. The disorder usually occurs only in adults.