Your hand is going numb again. The tingling starts in the thumb, index, and middle fingers. It wakes you up at 3 AM. You shake your hand and the feeling comes back. This has been happening for months, and you're pretty sure it's carpal tunnel syndrome. You're probably right.
What's Actually Happening
The carpal tunnel is a narrow passage in your wrist formed by bones and a thick ligament. The median nerve passes through it along with nine flexor tendons. When the tunnel gets crowded - due to swollen tendons, fluid retention, or anatomical narrowness - the nerve gets compressed.
Typing doesn't cause carpal tunnel syndrome. This is a common misconception. Repetitive wrist motion is a contributing factor, not the root cause. Anatomy, genetics, hormonal changes (pregnancy, thyroid conditions), diabetes, and wrist injuries all play larger roles.
That said, prolonged wrist flexion or extension while typing absolutely aggravates an already-susceptible nerve. So your desk setup matters.
The Desk Setup That Actually Helps
Keyboard position: Your wrists should be neutral - not bent up, not bent down. The top of the keyboard should be at or slightly below elbow height. Most desks are too high for most people. A keyboard tray helps. If you can't adjust the desk, raise your chair and use a footrest.
Mouse position: Keep the mouse close to the keyboard, at the same height. Reaching for it forces your wrist into extension. A vertical mouse reduces the twist in your forearm and can reduce symptoms.
Wrist rests are misunderstood. They're for resting between typing bursts, not for pressing your wrists against while you type. Typing with pressure on the wrist rest compresses the carpal tunnel directly.
Split keyboards can help because they allow your wrists to stay straighter. You don't need an expensive one. Even a slight angling of a regular keyboard (negative tilt, where the front is higher than the back) helps.
What to Do About Symptoms
Night splinting works. A wrist brace that keeps your wrist straight while you sleep prevents the flexion that compresses the nerve overnight. This alone resolves mild cases in many people. Wear it for 4-6 weeks consistently.
Nerve gliding exercises. These are specific hand movements that help the median nerve slide freely through the carpal tunnel. They look silly and feel weird. Do them three times a day: make a fist, straighten fingers, extend wrist back, extend thumb, turn palm up. Each position held for 5 seconds.
Anti-inflammatory measures. Ice the wrist for 10 minutes after long typing sessions. Oral NSAIDs (ibuprofen) help with acute flares but aren't a long-term solution.
When to See a Hand Specialist
Go sooner rather than later if:
- Numbness is constant (not just occasional tingling)
- You're dropping things or having trouble with buttons and zippers
- The thenar muscles (the fleshy pad at the base of your thumb) look flattened compared to your other hand
- Night splinting and ergonomic changes haven't helped after 4-6 weeks
Your doctor will likely order a nerve conduction study. This test measures how fast electrical signals travel through the median nerve. It confirms the diagnosis and tells the surgeon how severe the compression is.
The Surgery (If You Need It)
Carpal tunnel release is one of the simplest orthopaedic procedures. The surgeon cuts the transverse carpal ligament to open up the tunnel. It takes 10-15 minutes under local anesthesia. You go home the same day.
Most people are back to desk work within 1-2 weeks. Grip strength returns over 2-3 months. The numbness often starts improving within days, though tingling at night can take weeks to fully resolve.
The success rate is above 90%. Re-occurrence is rare.
Don't wait too long. Mild carpal tunnel is very treatable. Severe carpal tunnel with muscle wasting and constant numbness still improves with surgery, but the recovery is slower and the nerve may not fully recover.