Carpal tunnel syndrome (CTS)
Carpal tunnel syndrome is caused by conditions and activities that put pressure on the median nerve and decrease its blood supply, leading to tingling, numbness, pain, and/or weakness. Any of the following conditions or activities, or a combination of them, can lead to carpal tunnel syndrome:
Repetitive Movements. People who do certain movements or types of jobs including manufacturing and assembly line workers, grocery store checkers, violinists, and carpenters with their wrists and hands over and over may be more likely to develop CTS. Some hobbies and sports that use repetitive hand movements can also cause CTS, such as golfing, knitting, and gardening. Injury: A sprain or a fracture of the wrist can cause swelling and pressure on the nerve, increasing the risk of CTS. Pregnancy: Hormonal changes during pregnancy and build up of fluid can put pregnant women at greater risk of getting CTS, especially during the last few months. Other medical conditions: Conditions such as hypothyroidism and rheumatoid arthritis can increase the amount of tissue in the carpal tunnel.