Carpal tunnel syndrome (CTS) is pressure on a nerve in your wrist. It causes numbness, tingling and pain in your hand and fingers. CTS happens when the carpal tunnel inside your wrist swells and squeezes 1 of your nerves (median nerve).
A wrist splint is what you wear on your hand to keep your wrist straight. It helps to relieve pressure on the nerve.
You wear it at night while you sleep. You’ll have to wear a splint for at least 4 weeks before it starts to feel better.
You can buy wrist splints online or from pharmacies.