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Thumb Side or Little-Finger Side? A Few Millimeters, Two Different Problems
Most wrist pain after a busy week settles on its own in 3 to 7 days. Past that, the exact spot that hurts tells you most of what you need to know. Thumb side when you lift thumbs-up: usually De Quervain’s. Little-finger side when you twist or push up: usually the TFCC. Numb fingers at night: the carpal tunnel. And any wrist pain after a fall gets an X-ray before it gets a label.
The wrist is eight small bones, more ligaments per square centimeter than almost anywhere in your body, and a dozen tendons crossing it.
Crowded. Like a Tokyo train at rush hour.
Which is exactly why “wrist sprain” and “wrist tendonitis” get handed out so freely…and why so many of them turn out to be something else, months later.
In the wrist, a few millimeters of difference in where you point can be a completely different diagnosis.
Use one finger of your other hand. Press around until you find the worst spot. Then find it below.
First: the ones that don’t wait
- A fall onto the hand, now tender in the hollow at the base of the thumb: treat it as a scaphoid fracture even if the X-ray was called normal. This one HIDES
- A fall, and the wrist looks bent, or you can’t move it: X-ray today. A straight wrist with one sore spot of bone can still be a hairline fracture
- Numbness in the fingers that has stopped coming and going: a nerve on a deadline
- Red, hot, swollen, getting worse by the hour: infection or gout. Same day
(The hollow in question: lift your thumb up and back as if hitchhiking. The little dip that appears at the base of the thumb, between two tendons, is the anatomical snuffbox. Tender there after a fall means imaging, not reassurance.)
Pain on the thumb side of the wrist
- Two finger-widths above the thumb base, worst lifting a kettle or a baby thumbs-up: De Quervain’s tenosynovitis
- Higher up, a hand’s width above the wrist, sometimes with a squeak: intersection syndrome
- Right where the thumb meets the wrist, grinding when you open jars, usually past 45: thumb base arthritis
- The small hollow at the thumb base, after any fall: scaphoid fracture until imaging says otherwise
If the pain is mostly in the thumb itself rather than the wrist, thumb pain by location goes joint by joint.
Pain on the little-finger side of the wrist
- Bites when you turn a doorknob or push up out of a chair, sometimes clicks: TFCC injury
- Along a tendon at the back, or a snap when you turn the palm up: ECU tendinopathy or subluxation
- Ring and little fingers tingling, back of the hand normal: Guyon’s canal syndrome
- Deep in the heel of the palm after a club or bat took an impact: hook of hamate fracture
Pain on the top (back) of the wrist
- A deep central ache after a fall that never quite settled: scapholunate ligament injury. The wrist sprain that wasn’t
- The same deep ache with no injury at all, building over months: Kienböck’s disease
- A smooth lump that changes size: wrist ganglion. A hard one that never moves: carpal boss
- Weight-bearing pain in a young gymnast: gymnast’s wrist
A wrist “sprain” that still aches at week six was never just a sprain.
Palm side, into the fingers
Numbness and tingling in the thumb, index and middle fingers, waking you at night, easing when you shake the hand out: carpal tunnel syndrome.
The whole wrist
- After landing on the hand, swollen and bruised: wrist fracture
- Sore after one heavy session, improving daily: probably a wrist sprain, and that page lists the ones that aren’t
- Aching, stiffening and weakening years after an old injury: wrist arthritis. Other kinds of arthritis can start here too: the types, side by side
- Clicks or clunks: painless clicking is almost never a problem. Painful clicking, the location tells you which structure
- Builds through a workday at a desk, settles overnight: wrist pain from desk work
Is it “wrist tendonitis”?
“Wrist tendonitis” isn’t one diagnosis. It’s a bucket.
There are a dozen tendons crossing your wrist, and which one is irritated changes the splint, the exercises and how long it takes. The common ones are De Quervain’s on the thumb side, intersection syndrome just above it, and ECU on the little-finger side. If someone just tells you “tendonitis”, ask WHICH tendon. The full wrist tendonitis guide covers how to tell, what settles it and how long it takes.
How is wrist pain diagnosed?
Mostly with hands, then with the right picture. The examination decides which scan is worth having.
- Pressing, precisely. The snuffbox, the tendon above the thumb, the soft spot just past the end of the forearm bone on the little-finger side, the center of the back of the wrist. Each one points at a different structure.
- Provocation tests. Thumb tucked in with the wrist bent toward the little finger for De Quervain’s. Twisting and loading the little-finger side for the TFCC. A shift test on the scaphoid for the ligament between the two key wrist bones.
- Nerve tests. Tapping over the nerve, holding the wrist bent, checking sensation finger by finger. Nerve conduction studies when numbness is constant or surgery is being considered.
- X-ray. After any fall, with dedicated scaphoid views if the snuffbox is tender. A suspected scaphoid fracture with a normal first X-ray usually gets a repeat at 10 to 14 days, or an MRI.
- MRI. For ligament and TFCC tears, Kienböck’s, and hidden fractures.
- Ultrasound. Quick and good for tendons, ganglions and a tendon that snaps out of its groove.
How long does wrist pain take to heal?
It depends which window your wrist is running on. Most are open. A few start closing on the day of the injury.
- Overuse ache or a mild sprain: OPEN. Usually 1 to 2 weeks. A true sprain can take up to 6 weeks. Still sore past that, it gets re-examined.
- De Quervain’s and other tendon problems: OPEN, but slow. Commonly 6 to 12 weeks with a splint and a change in how you load the wrist.
- TFCC injury: OPEN. Many settle over 6 to 12 weeks with a support and load changes. Some take 3 to 6 months, and a few need surgery.
- Carpal tunnel that comes and goes: OPEN. A night splint trial of 6 to 12 weeks settles many. Numbness that has become constant: CLOSING. Nerves tolerate pressure for a while, then start losing fibers.
- Scaphoid fracture: CLOSING. Commonly 8 to 12 weeks or more in a cast. Missed and left moving, it can fail to heal at all.
- Scapholunate ligament tear: CLOSING. Repair options are widest in the first weeks after the injury. Left for months, the wrist can slowly drift out of alignment and wear.
- Wrist fracture: commonly 6 to 8 weeks for the bone to heal, and 3 to 6 months or more for movement and grip to come back.
What can I do for wrist pain at home?
For the ordinary overuse kind, with no fall behind it, no constant numbness and nothing on the list at the top:
- Cut the provoking load, not all load. Find the lift, twist or session that sets it off and halve it for 1 to 2 weeks. Total rest stiffens the wrist and weakens what you’re trying to calm.
- Keep the wrist near straight for heavy jobs. Lift with the palm facing up and the load close to your body. Push-ups on your fists, or on a push-up handle, instead of a bent-back wrist.
- Support it when it makes sense. Night tingling: a neutral night splint. Little-finger side pain with twisting: an ulnar-sided wrist brace for the jobs that hurt.
- Keep it moving. Bend the wrist up and down, then side to side, slowly. 10 of each, 3 times a day, within comfort.
- Give it 7 days. Better by day 7, keep going. Same or worse, get it assessed.
(If it started with a fall, skip all of this until it’s been X-rayed. Exercising a broken scaphoid is how a 10-week problem becomes a surgical one.)
The short version
Thumb side lifting thumbs-up: De Quervain’s. Little-finger side twisting: TFCC. Numb fingers at night: carpal tunnel. Any fall: X-ray first, label second.
Improving by day 7, let it finish. Same or worse at day 7, get it assessed. If it started in the last day or two, the first 72 hours covers what to do now. If the ache is higher up the arm, forearm pain by location.
Get it checked if
- It started with a fall and hasn’t been X-rayed, or it’s still sore 10 to 14 days after a “normal” X-ray.
- Numbness or tingling is constant, or you’re dropping things.
- The wrist clunks or gives way when you load it.
- Pain wakes you at night, or aches at rest.
- A lump is growing, hard, or painful.
- It’s no better after 7 days of easing the load, or a “sprain” still aches at week 6.
And if it’s red, hot and spreading, or the wrist looks bent after a fall, don’t wait for any of the above. Go back to the top of this page.
If the pain sits under a watch strap, see smartwatch wrist pain.
Point to the spot before anyone hands you a label. The spot decides the splint, the scan and the clock.
Written by Nigel Chua, hand occupational therapist in practice since 2005. Thousands of hands, wrists and elbows assessed and treated. My credentials are here. 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. This page narrows the field; it doesn’t examine you. Wrist pain that isn’t clearly improving by day 7 needs assessing.