Treating numbness in your hands depends entirely on what’s causing it, and the causes range from a pinched nerve at the wrist to a vitamin deficiency to something that needs emergency attention. The good news is that most cases trace back to treatable conditions, and many improve with simple changes you can start today.
What’s Causing the Numbness
The five most common reasons your hands go numb each involve a different mechanism, which is why the right treatment varies so much from person to person.
- Carpal tunnel syndrome: Pressure on the median nerve where it passes through a narrow channel at your wrist. This is the single most common cause and typically affects the thumb, index, and middle fingers.
- Cervical herniated disc: A disc in your neck bulges and presses on the spinal nerves that run down into your arm and hand. The numbness pattern depends on which disc is involved.
- Peripheral nerve compression: Swollen tissue, scar tissue, or even a tumor presses on a nerve somewhere along its path from your neck to your fingertips.
- Raynaud’s phenomenon: Blood vessels in your hands narrow excessively in response to cold or stress, temporarily cutting off blood flow. Your fingers turn white or blue before sensation returns.
- Reduced blood supply: Hardened arteries, vessel inflammation, or frostbite limits circulation to the hand.
A sixth cause worth knowing about: vitamin B12 deficiency. It damages the protective coating around nerves and can produce numbness and tingling in both hands. A blood level below 150 pg/mL is considered diagnostic for deficiency, and people who’ve had bariatric surgery, follow a strict vegan diet, or are over 60 are at higher risk.
When Hand Numbness Is an Emergency
Numbness in one hand that comes on suddenly, especially on just one side of the body, can be a stroke. The CDC uses the acronym F.A.S.T. to help identify one: ask the person to smile and check if one side of the face droops, ask them to raise both arms and watch for one drifting downward, listen for slurred or strange speech, and if any of these signs are present, call 911 immediately. Other red flags include sudden confusion, trouble seeing, loss of balance, or a severe headache with no known cause. Stroke treatments are time-sensitive, and every minute matters.
Home Treatments That Help
Nerve Gliding Exercises
If your numbness stems from nerve compression (carpal tunnel being the classic example), nerve gliding exercises can help the nerve move more freely through the surrounding tissue. These are simple motions you do at home, and physical therapists frequently prescribe them as a first step before considering anything more aggressive.
A basic median nerve glide: stand with your arm relaxed at your side, palm facing forward. Slowly bend your wrist backward, stretching the front of your wrist and palm. Hold for two seconds, then return to the starting position. For a slightly more advanced version, add a gentle head tilt toward the opposite shoulder while your wrist is extended, which increases the stretch along the full length of the nerve.
Start with about five repetitions and gradually work up to 10 to 15. The motion should be gentle and controlled. If it reproduces sharp pain or significantly worsens your symptoms, back off and get a professional assessment before continuing.
Ergonomic Adjustments
If you work at a computer, your wrist position throughout the day may be contributing to or maintaining the problem. OSHA recommends keeping your wrists in a neutral, straight position while typing, not bent up, down, or to the side. This means adjusting your chair height, desk, and keyboard so your forearms are roughly parallel to the floor and your wrists aren’t forced into an angle. A wrist rest matched to the height and slope of your keyboard’s front edge can help maintain that straight alignment. These changes won’t reverse existing nerve damage, but they remove the repetitive stress that makes compression worse.
Splinting
For carpal tunnel specifically, wearing a wrist splint at night keeps your wrist in a neutral position while you sleep. Many people unknowingly flex their wrists during the night, which increases pressure inside the carpal tunnel. A simple over-the-counter splint from a pharmacy can make a noticeable difference within a few weeks.
Treating B12 Deficiency
When numbness is caused by low B12, supplementation can reverse the nerve damage if caught early enough. High-dose oral B12, typically 1 to 2 mg daily, is as effective as injections for most people. However, if your deficiency is severe or your neurological symptoms are significant, injections given every other day for up to three weeks produce faster improvement. Patients who’ve had bariatric surgery generally need 1 mg of oral B12 daily for life, since their ability to absorb it from food is permanently reduced.
The key detail here is timing. Nerve damage from prolonged B12 deficiency can become permanent if left untreated for too long. If your numbness has been building gradually over months and you have risk factors for deficiency, a simple blood test can confirm or rule it out quickly.
Medications for Nerve Pain and Numbness
When numbness is accompanied by pain, burning, or tingling from nerve damage (peripheral neuropathy), medications can help manage those symptoms even if they don’t fix the underlying nerve problem. First-line options typically fall into two categories: certain antidepressants and certain anticonvulsants, both of which work by calming overactive nerve signals rather than treating depression or seizures.
These medications are started at low doses and increased gradually over several weeks to find the right balance between symptom relief and side effects. The most common side effects include drowsiness and dizziness, which is why they’re often taken at bedtime initially. Your doctor will tailor the choice and pace of dose increases based on your age, other medications, and how you respond.
How Doctors Diagnose the Cause
If your numbness doesn’t improve with basic measures, or if it’s worsening, the next step is usually a nerve conduction study, sometimes paired with an EMG. A nerve conduction study measures how fast electrical signals travel through a nerve. If the signal slows at a specific point, that tells the doctor exactly where the nerve is being compressed. An EMG measures the electrical activity in the muscle itself, both at rest and when you contract it, to determine whether the nerve supplying that muscle is functioning normally.
During the EMG portion, a thin needle is inserted into the muscle. The signals appear as waves on a screen and may also be played through a speaker so the provider can hear the electrical pulses. The test is mildly uncomfortable but not typically painful, and it takes 30 to 60 minutes. Together, these tests give a clear picture of whether the problem is at the wrist, elbow, neck, or somewhere else along the nerve’s path.
When Surgery Makes Sense
For carpal tunnel syndrome that hasn’t responded to splinting, exercises, and ergonomic changes after several months, surgery to release pressure on the median nerve is one of the most successful procedures in orthopedics. The clinical success rate exceeds 95 percent. The operation involves cutting the ligament that forms the roof of the carpal tunnel, giving the nerve more room.
Recovery is faster than many people expect. The incision is small, closed with adhesive strips or a few stitches, and you can move and use your wrist immediately afterward. Some patients return to heavy manual labor within a few weeks, though desk workers often get back sooner. Numbness that has been present for a long time before surgery may take longer to fully resolve, and in rare cases where the nerve has been compressed for years, some residual numbness may persist. This is another reason not to ignore hand numbness that isn’t going away on its own.
Practical Steps to Start With
If your numbness is intermittent, worse at night, and concentrated in your thumb and first few fingers, try a wrist splint at night and nerve gliding exercises during the day for two to three weeks. Adjust your workstation so your wrists stay straight. If you have risk factors for B12 deficiency, ask for a blood test. If your numbness is constant, worsening, affecting your grip strength, or accompanied by pain radiating from your neck, get a professional evaluation sooner rather than later, because the longer a nerve stays compressed, the harder it becomes to fully restore normal sensation.