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The Watch Counts Your Steps. It Shouldn’t Be Squeezing Your Nerve.
Yes, a smartwatch or tight fitness band can cause wrist pain and numbness.
It happens in three ways: pressure on the bony bump on the little-finger side, irritation of the tendon running past it, and squeezing a thin skin nerve on the thumb side, which gives tingling or numbness on the back of the thumb.
Loosen the band one notch, wear it a finger-width higher up the forearm, and take it off at night. Most watch-related wrist pain settles within days to 2 or 3 weeks once the pressure’s off.
Where are you right now?
- Sore under or beside the watch: read “Where it hurts.”
- Numb or tingly on the back of the thumb: read “The nerve on the thumb side.”
- It only hurts in the gym: read “Working out with a watch.”
- Numb in the palm, thumb, index and middle fingers at night: that’s more likely carpal tunnel. See the comparison below.
Where it hurts tells you why
- On the bony bump, little-finger side: the watch body or buckle pressing on the end of the ulna. Common with tight bands and bigger watch cases.
- Just beside that bump, worse turning the wrist: the tendon running there (ECU) getting rubbed and irritated.
- Tingling, numbness or burning on the back of the thumb and index finger: a pressed skin nerve.
- Itchy, red or blistered skin under the band: a skin reaction to sweat, the band or the metal. That’s one for a doctor, not a hand therapist.
Smartwatches look like the future. Dick Tracy had one in the comics in 1946. He never wore his to bed, as far as I know.
The nerve on the thumb side
A thin nerve, a branch of the radial nerve, runs just under the skin on the thumb side of the wrist. It only carries feeling, from the back of the thumb and part of the index finger.
A tight band, a tight bracelet or even handcuffs can pinch it. The result is tingling, numbness or burning on the back of the thumb, often worse when the wrist moves.
Take the pressure off and it usually recovers over days to weeks. Numbness that’s still there 2 to 3 weeks after you’ve stopped wearing the band needs a proper look.
Is it the watch or carpal tunnel?
| Watch nerve pressure | Carpal tunnel | |
|---|---|---|
| Where | Back of the thumb and index finger | Palm side of thumb, index and middle fingers |
| When | When the band is on, or tight | At night, waking you; driving; phone use |
| With the watch off | Usually improves within days to weeks | Carries on |
More on the nerve patterns in pins and needles in the fingers.
How to wear it
- Loosen it. You should fit one finger under the band.
- Move it up. Wear it a finger-width above the bony bump, not on it.
- Switch wrists for a week if one side is sore.
- Nights: take it off, or loosen it a notch if you track sleep.
- Try a softer band: fabric or a sport loop spreads the pressure better than a hard metal link band.
- Keep it clean and dry: sweat trapped under a tight band irritates skin.
If you can see the band’s outline on your skin an hour after you take it off, it’s too tight.
Working out with a watch
Push-ups, planks and burpees bend the wrist back, and the watch body digs into the back of the wrist. Loosen it and slide it up the forearm for training, or wear it on the other wrist. See wrist pain doing push-ups.
How fast it settles, week by week
- Days 0 to 7 (OPEN): pressure off. Bone and tendon soreness usually eases within the first week.
- Weeks 1 to 3 (OPEN): nerve tingling usually fades. Wear it again loosely, higher up, once comfortable.
- After 3 weeks (CLOSING for the nerve): numbness that’s still there needs assessing.
Is this normal?
Usually expected:
- A sore spot on the bony bump after a day with a tight band.
- Band marks that fade within an hour.
- Brief tingling that goes when you loosen it.
Check with a doctor if the tingling stays after the watch is off, or there’s a lump under the band.
If it isn’t going to plan
The watch has been off for 3 weeks. The back of your thumb is still numb, or the wrist still hurts with nothing on it.
Then the watch may not be the whole story. A nerve that stays quiet after the pressure’s gone needs testing. A wrist that hurts without the watch may have a ganglion cyst, a TFCC problem or De Quervain’s that the watch only made obvious.
Get it assessed by a doctor or hand therapist. See wrist pain by location.
When can I…?
Typical ranges once the pressure is off.
| Activity | Typical timing |
|---|---|
| Wear it again, loosely and higher up | Once the soreness has gone, often within a week |
| Sleep with it on | Only loose, or not at all if symptoms come back |
| Train with it on | Loose and slid up the forearm, or on the other wrist |
Get it checked if
- Numbness or tingling is still there 2 to 3 weeks after you’ve stopped wearing the band.
- There’s a lump under or beside where the watch sits.
- The skin under the band blisters, weeps or the rash spreads.
- The wrist hurts even with the watch off.
A smartwatch should track your wrist, not squeeze it. One notch looser fixes most of it.
Written by Nigel Chua, hand occupational therapist in practice since 2005. Thousands of hands, wrists and elbows assessed and treated. My credentials are here. This article explains; it doesn’t examine. If the numbness stays after the watch comes off, get the nerve checked.
Part of: Hand, wrist and elbow pain by job, sport and hobby
Every article on this site is written using the Closing Window Method: name the window your condition runs on, find where you are in it, and act while it’s still open.