Final answer:
Carpal tunnel syndrome occurs when the median nerve in the wrist becomes compressed due to repetitive use, trauma, or a tumor. Work-related activities and certain tasks increase the risk of developing this syndrome.
Step-by-step explanation:
Carpal tunnel syndrome occurs when the median nerve in the wrist becomes compressed. This compression can happen due to repetitive use of the wrist, a tumor, or trauma to the wrist. Two-thirds of the cases are work-related, and activities such as computer work, work with vibrating tools, and work requiring a strong grip increase the risk of developing this problem.