Carpal Tunnel Syndrome - It occurs due to compression of median nerve due to reduced size of carpal tunnel.

It may happen due to

• Inflamation or thickening of the the synovial sheaths of the flexor tendons(Tenosynivitis)
• due to repeat stress injury or Inflamation of flexor retinaculum
• arthritis of carpal bones.

The causes and definition of carpal tunnel syndrome is explained above.

hope this helps