Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Carpal Tunnel Syndrome ?
    ### Response:
    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.
    