Carpal tunnel syndrome is a painful progressive condition that occurs when the median nerve, which runs from the forearm into the hand, becomes pressed or squeezed at the wrist. The median nerve controls sensations to the palm side of the thumb and fingers (not the little finger), as well as impulses to some small muscles in the hand that allow the fingers and thumb to move.

• Test Your Knowledge: Carpal Tunnel Syndrome
• How Carpal Tunnel Syndrome Develops: Step-By-Step

Carpal tunnel syndrome can begin suddenly or gradually and can be associated with other conditions, such as rheumatoid arthritis and systemic lupus erythematosus. Who else is at risk for developing carpal tunnel syndrome? What are other risk factors for developing carpal tunnel syndrome? Chris Adams, About.com Guide to Ergonomics, discusses Carpal Tunnel Syndrome Risk Factors.

• Guide to Carpal Tunnel Syndrome
• Carpal Tunnel Syndrome Screening Quiz
• Carpal Tunnel Syndrome: Prevention Vs. Surgery

_{Photo © ADAM}