Carpal tunnel syndrome, a painful hand and wrist illness, occurs as a result of gradual compression of the median nerve. As the median nerve is squeezed, less blood and nutrients flow to it, causing pain, numbness, and weakness in the fingers and thumb. As symptoms worsen, people might feel tingling during the day, and decreased grip strength may make it difficult to form a fist, grasp small objects, or perform other manual tasks.
(For the full eMedTV article on this topic, click Carpal Tunnel Syndrome. This article includes detailed information on the anatomy of the carpal tunnel, as well as a description of who this condition is most likely to affect.)
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