How to sleep more comfortably with carpal tunnel syndrome
Nicola Tik
Waking in the night with numbness, tingling, or an aching heaviness in the hand is one of the most disruptive features of carpal tunnel syndrome, and one of the most common reasons people seek help. If this sounds familiar, you are not alone. Night symptoms affect a large proportion of people with carpal tunnel syndrome, and there are some practical things that can make a real difference to how you sleep.
Carpal tunnel syndrome occurs when the median nerve, which runs through a narrow passage in the wrist called the carpal tunnel, becomes compressed or irritated. This nerve supplies feeling to the thumb, index finger, middle finger, and part of the ring finger, which is why those areas are often the first to feel numb or tingly.
During sleep, most people naturally let their wrists bend, either curling the hand under the chin, tucking it beneath a pillow, or resting it against the body in a flexed position. A bent wrist narrows the carpal tunnel further, which increases pressure on the median nerve. This is why symptoms often peak at night or in the early hours, even if the daytime has been relatively comfortable.
The tingling or numbness is the nerve signalling that it is under pressure. Shaking the hand out or hanging it over the side of the bed often brings temporary relief because it changes the wrist position and reduces that pressure briefly.
One of the most well-supported options for night symptoms is wearing a wrist splint during sleep. A splint holds the wrist in a neutral position, which keeps the carpal tunnel as open as possible and reduces pressure on the nerve through the night.
Splints designed for this purpose are widely available without a prescription. They are worth trying if night symptoms are regularly disturbing your sleep. It may take a few nights to get used to wearing one, and finding a comfortable fit can take a little adjustment. Many people find that even wearing a splint on the most affected hand makes a noticeable difference to how they sleep within a week or two.
If you are unsure which type to look for, a pharmacist can usually point you in the right direction.
Alongside a splint, the position you sleep in can make a difference. Keeping the wrist as straight as possible through the night is the underlying aim. A few positions worth trying:
Lying on your back with your arm resting alongside your body, rather than tucked under your head or pillow, reduces the likelihood of the wrist bending during sleep.
If you sleep on your side, try to avoid curling the hand under your chin or tucking it beneath the pillow. Resting the arm on a pillow alongside you, with the wrist roughly straight, can help.
Elevating the hand slightly, by resting the forearm on a pillow so the hand is a little higher than the elbow, may also reduce any overnight swelling that contributes to pressure in the tunnel.
If you wake in the night with tingling or numbness, gently shaking the hand or letting it hang over the side of the bed can bring some relief while things settle. Slowly opening and closing the fingers a few times, or doing a few gentle wrist circles, can also help the sensation ease more quickly.
It is worth keeping the wrist as straight as possible once you settle back to sleep, which is where a splint is particularly useful.
Night symptoms are often the most disruptive feature of carpal tunnel syndrome, but daytime habits contribute to how the nerve is doing overall. Reducing sustained or repeated wrist bending during the day, keeping grip force light where possible, and taking short breaks from concentrated hand use all help to reduce the overall load on the median nerve.
If you would like some guided movement to support the wrist and hand, VIDA has a short video you can follow at your own pace.