Finger numbness during pregnancy is extremely common, affecting roughly 31% to 62% of pregnant women by the third trimester. The cause is almost always carpal tunnel syndrome, where the median nerve running through your wrist becomes compressed. The good news: several simple strategies can reduce the tingling and numbness, and for most women, the problem resolves completely within three months of giving birth.
Why Pregnancy Causes Numb Fingers
The median nerve passes through a narrow channel in your wrist called the carpal tunnel. During pregnancy, the nerve itself swells and becomes larger, which crowds it within that tight space. Interestingly, research from Monash University using ultrasound imaging found no actual fluid buildup inside the carpal tunnel of pregnant women with symptoms, despite the long-held belief that fluid retention was the culprit. Instead, the nerve grows larger and more mobile, and the ligament forming the tunnel’s roof becomes thinner, all of which change how the nerve sits and how much pressure it’s under.
The result is numbness, tingling, or a pins-and-needles sensation in your thumb, index finger, middle finger, and the thumb side of your ring finger. These are the fingers the median nerve supplies. Symptoms tend to be worse at night and in the morning, and they typically peak in the third trimester when your body holds the most extra fluid and the nerve is most swollen.
Wear a Wrist Splint at Night
A neutral wrist splint is the single most effective non-invasive relief for pregnancy-related carpal tunnel. When you sleep, your wrists naturally curl inward, which narrows the carpal tunnel and increases pressure on the nerve. A splint holds your wrist in a straight, neutral position so the nerve has maximum room. The Royal Women’s Hospital recommends wearing a splint especially at night, though you can also wear one during the day if typing or repetitive hand work makes your symptoms flare. Wrist splints are inexpensive, available at most pharmacies without a prescription, and safe to use throughout pregnancy.
Nerve Gliding Exercises
Nerve gliding exercises gently move the median nerve through the surrounding tissue, helping it slide more freely and reducing tingling or numbness. Start with five repetitions and gradually work up to 10 to 15 as the movements feel comfortable.
Basic wrist extension: Stand with your arm relaxed at your side, palm facing forward. Slowly bend your wrist backward so you feel a gentle stretch across the front of your wrist and palm. Hold for two seconds, then return to the starting position.
Wrist extension with head tilt: Begin the same way, bending your wrist backward. Then gently tilt your head toward the opposite shoulder. This increases the stretch along the nerve from your neck down through your arm. Return to neutral and repeat.
Full arm extension: Extend your arm straight out to your side at shoulder height, bend your wrist upward so your fingers point toward the ceiling, and tilt your head away from the outstretched arm. Hold for two seconds. This is a more advanced variation, so only try it once the basic versions feel easy and pain-free.
These exercises should produce a mild stretching sensation, not pain. If any movement causes sharp discomfort or worsens your numbness, stop and try a gentler version.
Adjust How You Work and Type
If you spend time at a desk, small ergonomic changes can make a noticeable difference. Float your wrists above the keyboard while typing rather than resting them on the desk or a wrist pad. Resting compresses the carpal tunnel from the outside. Keep your hands, wrists, and forearms in a straight line so the nerve channel stays as open as possible. Position your keyboard, mouse, and phone near the edge of your work surface to avoid reaching and angling your wrists awkwardly.
Take breaks every 30 to 45 minutes to shake out your hands, stretch your fingers wide, and do a few of the nerve gliding exercises above. Even short pauses reduce the cumulative pressure on the nerve.
Sleep Position and Comfort
Beyond a wrist splint, how you position your arms at night matters. Avoid sleeping with your hand tucked under your pillow or your wrist bent against your body. Try to keep your affected hand elevated slightly, either on a pillow beside you or resting on your belly, so gravity helps fluid drain away from the wrist. A pregnancy pillow can make it easier to stay in a comfortable side-lying position without compressing your arms underneath you.
Changing positions frequently also helps. Staying in one posture for hours can restrict blood flow and increase nerve compression. If you wake with numb fingers, shaking your hands gently for 30 to 60 seconds often restores sensation faster than waiting it out.
What About Vitamin B6?
You may have heard that vitamin B6 supplements help carpal tunnel symptoms. The largest and most comprehensive study on this topic, led by researchers at the University of Michigan, found no correlation between a person’s vitamin B6 levels and carpal tunnel syndrome. More concerning, some physicians have prescribed doses of 200 to 300 milligrams per day, far above the recommended daily amount of 1.6 to 2.0 milligrams. At those levels, vitamin B6 can actually damage sensory nerves and cause the very numbness and tingling you’re trying to relieve. Unless your prenatal provider has identified a specific B6 deficiency, supplementing beyond what’s in your prenatal vitamin is unlikely to help and could cause harm.
Other Strategies That Help
Cold packs applied to the inside of your wrist for 10 to 15 minutes can temporarily reduce nerve swelling and ease tingling. Wrap the pack in a cloth to protect your skin. Some women also find relief by soaking their hands in cool water or alternating between cool and warm water to encourage circulation.
Reducing salt intake may help minimize overall fluid retention, which can indirectly ease pressure around the nerve. Staying hydrated, counterintuitively, also helps your body regulate fluid balance rather than holding onto excess water.
If your symptoms are severe, persistent, or affecting your grip strength or ability to feel objects, a hand therapist or physiotherapist can provide targeted treatments and customized splinting. In rare cases where numbness doesn’t respond to conservative measures, a corticosteroid injection near the carpal tunnel can provide temporary relief during pregnancy, though most providers prefer to exhaust simpler options first.
When It Goes Away
Most pregnancy-related carpal tunnel syndrome resolves within three months after delivery as your body sheds the extra fluid and the nerve returns to its normal size. Breastfeeding can sometimes delay resolution because hormonal changes continue to affect fluid distribution. If your symptoms started early in pregnancy, were particularly severe, or you had carpal tunnel issues before becoming pregnant, recovery may take longer. A small percentage of women have symptoms that persist beyond six months postpartum, at which point further evaluation is worthwhile.