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Explain carpal tunnel syndrome. What structures are involved, and what pathology exists here? Recommend prevention tips and treatments for this syndrome. Explain the modified Allen test and Tinel's sign.Carpal tunnel syndrome is caused by pressures on the median nerve that are located within the wrists. The median nerve provides feeling to all of your fingers except for the pinkies. The median nerve runs through tunnels that are made of bones and ligaments inside of the wrist, which allows blood vessels to spread across the wrist. Carpal tunnel syndrome is present when there is swelling in that wrist. When the wrists are in a continuous position where the tunnel is compressed, it creates the tunnel to be squeezed and pinching occurs on the median nerve. Some recommended prevention tips and treatments for this syndrome are by reducing the stress and strain on your hands and wrists as much as possible in order to keep it from getting worse. You can do this by not holding a tool so tight or using gentler keystrokes on a keyboard. Another prevention tip is to give your hands and wrists a break from the task and when taking that break begin stretching the hands and wrists in other positions which will allow adequate blood flow. There are tests that can be performed to diagnose carpal tunnel.