ConditionBones, joints & muscles
De Quervain's Tenosynovitis
De Quervain's tenosynovitis is a painful condition affecting two tendons that run along the thumb side of the wrist. The tunnel they pass through becomes thickened and narrow, so moving the thumb, gripping, lifting or twisting the wrist hurts. It is common in new parents lifting a baby, and in people with repetitive hand work. Most cases improve within weeks to a few months with a thumb splint, rest and a steroid injection. Surgery is needed only if these fail.
Also called: De Quervain's disease, De Quervain's syndrome, mother's wrist, mommy thumb, gamer's thumb, radial styloid tenosynovitis
At a glance
- What it is
- Thickening of the tendon sheath of two thumb tendons at the wrist.
- Main symptom
- Pain and swelling on the thumb side of the wrist, worse with gripping and thumb movement.
- Who gets it
- Women aged 30 to 50, new parents, people with repetitive hand or wrist work.
- Diagnosis
- Examination with the Finkelstein test; X-ray only to rule out other causes.
- Treatment
- Thumb spica splint, activity change, NSAIDs, steroid injection; surgery if needed.
When to get help
See a doctor within a day or two
- Wrist pain after a fall onto an outstretched hand, especially tenderness in the hollow at the base of the thumb (possible scaphoid fracture)
- A red, hot, swollen wrist with fever (possible infection)
Book a routine appointment
- Thumb-side wrist pain lasting more than 2 weeks despite rest
- Pain that stops you lifting your baby, typing or gripping
- Numbness or tingling in the thumb and fingers along with wrist pain
- Swelling, catching or a lump on the thumb side of the wrist
Usually safe to manage at home
- Mild pain that started with a new repetitive activity and is improving with rest and a splint
What happens in De Quervain's
Two tendons, the abductor pollicis longus and extensor pollicis brevis, move the thumb away from the hand and straighten it. At the wrist, they glide through a tight tunnel (the first dorsal compartment) over a bony bump called the radial styloid. Repetitive gripping, pinching or wrist bending irritates the tunnel lining, which thickens. The tendons then rub, causing pain and swelling. Despite the "-itis" name, inflammation is often minimal; the main change is thickening of the sheath.
Symptoms
- pain on the thumb side of the wrist, sometimes spreading up the forearm or into the thumb
- pain with gripping, pinching, lifting, turning a doorknob, or wringing a cloth
- swelling over the thumb side of the wrist
- a catching or snapping feeling when moving the thumb
- weakness of grip
Causes and risk factors
- New parents: repeatedly lifting a baby with the thumbs spread apart. Hormonal fluid changes in pregnancy and breastfeeding may contribute.
- Repetitive hand use: gardening, racquet sports, golf, typing, smartphone and gaming use, assembly line and carpentry work.
- Age and sex: most common in women aged 30 to 50.
- Inflammatory arthritis such as rheumatoid arthritis.
- Direct injury to the wrist.
Diagnosis
A doctor examines the wrist and performs the Finkelstein test: you tuck your thumb into your palm, make a fist, and the doctor gently bends the wrist toward the little finger. Sharp pain on the thumb side of the wrist suggests De Quervain's.
X-rays are not needed to diagnose it but may be done to rule out other conditions. Ultrasound can show the thickened sheath and sometimes a dividing wall inside the tunnel, which affects treatment response.
Conditions that can look similar
| Condition | Distinguishing features |
|---|---|
| Thumb arthritis (base of thumb) | Pain lower down at the base of the thumb, grinding, worse in people over 50 |
| Scaphoid fracture | Follows a fall; tender in the hollow at the base of the thumb |
| Carpal tunnel syndrome | Numbness and tingling in thumb, index and middle fingers, worse at night |
| Intersection syndrome | Pain and creaking a few inches higher up the forearm |
| Ganglion cyst | A smooth, firm lump on the wrist |
| Wartenberg syndrome | Burning or numbness over the back of the thumb from an irritated nerve |
Treatment
First steps
- Thumb spica splint: keeps the thumb and wrist still and rests the tendons. Wear it for 4 to 6 weeks, especially during activities and at night.
- Activity changes: avoid repetitive pinching and wrist bending. New parents can lift the baby with the palms and forearms, scooping rather than gripping under the arms with spread thumbs.
- Ice for 10 to 15 minutes several times a day.
- Pain relievers: ibuprofen or naproxen can ease pain. Follow the label dose. Avoid NSAIDs if you have kidney disease, stomach ulcers or take blood thinners unless your doctor agrees.
Steroid injection
A corticosteroid injection into the tendon sheath is highly effective, relieving symptoms in most people, often after one injection. It is commonly combined with a splint. A second injection may be offered. Injections are safe while breastfeeding.
Hand therapy
A hand therapist can provide a custom splint, teach tendon gliding and later strengthening exercises, and advise on ergonomics.
Surgery
If symptoms persist after several months of non-surgical treatment, a short outpatient operation releases the tight tunnel. It is done under local or regional anesthesia. Most people regain full function within weeks to a few months. Risks include irritation of the nearby superficial radial nerve and, rarely, tendon slipping.
Outlook
Most people recover fully with splinting and an injection. Pregnancy- and breastfeeding-related cases often resolve after the baby is older or weaning is complete. Early treatment shortens recovery.
Frequently asked questions
What causes De Quervain's tenosynovitis?
It is caused by thickening of the tunnel that two thumb tendons pass through at the wrist, usually from repetitive gripping, pinching or wrist movements. It is especially common in new parents, people who use their hands repetitively at work or in sports, and women aged 30 to 50.
What is the Finkelstein test?
It is a simple exam for De Quervain's. You fold your thumb into your palm and make a fist, then the doctor bends your wrist toward the little finger. Pain over the thumb side of the wrist suggests De Quervain's tenosynovitis.
How long does De Quervain's take to heal?
With a splint and rest, many people improve in 4 to 6 weeks. A steroid injection often brings relief within days to a couple of weeks. Cases that do not respond after several months may need a small surgery, with recovery over several weeks.
Why is De Quervain's common in new mothers?
Lifting a baby repeatedly with the thumbs spread out strains the thumb tendons, and hormonal fluid retention during pregnancy and breastfeeding may narrow the tendon tunnel. Changing lifting technique and a thumb splint usually help.
Sources
This guide was written from current patient and clinical guidance, including:
- American Academy of Orthopaedic Surgeons (OrthoInfo): De Quervain's tendinosis
- American Society for Surgery of the Hand: De Quervain's tendonitis
- NHS: De Quervain's syndrome
- MedlinePlus: De Quervain's tenosynovitis
- Mayo Clinic: De Quervain tenosynovitis