The carpal tunnel is a narrow passageway in the wrist that protects the median nerve and tendons responsible for hand movement and sensation. Because this area is compact, swelling or irritation can place pressure on the nerve and affect normal hand function.
Carpal tunnel syndrome develops when the median nerve becomes compressed within the carpal tunnel. This may be caused by inflammation, repetitive motions, injury, or structural changes in the wrist. Common symptoms include numbness, tingling, pain, and weakness in the hand or fingers.