The short answer
De Quervain's tenosynovitis is irritation and swelling of the sheath around the two thumb-side wrist tendons, causing pain at the thumb base and wrist that worsens with gripping, lifting, or wringing. It is common with repetitive hand use and after pregnancy, and usually responds to a thumb-spica splint, activity changes, and an ultrasound-guided cortisone or PRP injection.
Medically reviewed by Marc Gruner, DO, MBA, RMSK
Sports medicine physician, Mayo Clinic fellowship. Last reviewed June 2026
Overview
De Quervain's tenosynovitis affects the tendons that run along the thumb side of the wrist as they pass through a tight tunnel. When the sheath becomes irritated and swollen, moving the thumb and wrist hurts — often with a positive Finkelstein test, in which tucking the thumb and bending the wrist reproduces the pain.
It frequently follows repetitive gripping, lifting, and typing, and is common in new parents from lifting an infant. Dr. Gruner treats it with a thumb-spica splint, activity modification, and hand therapy, adding a precise ultrasound-guided cortisone or PRP injection into the tendon sheath when needed.
Common symptoms
- Pain at the thumb side of the wrist
- Pain with gripping, lifting, or wringing
- Swelling near the base of the thumb
- A catching or 'sticking' sensation with thumb movement
What to expect at your visit
- 1.
A focused conversation
Dr. Gruner reviews your history, prior imaging, and goals — what you want to get back to doing.
- 2.
Point-of-care ultrasound
When useful, a diagnostic musculoskeletal ultrasound evaluates the injury in real time, with no radiation.
- 3.
A clear, individualized plan
You leave understanding the diagnosis, the non-surgical options, and the expected timeline — in plain language.
Frequently asked questions
- Does De Quervain's need surgery?
- Usually not. Most cases improve with a thumb-spica splint, activity changes, hand therapy, and an ultrasound-guided cortisone or PRP injection placed accurately into the tendon sheath. Surgery to release the sheath is reserved for cases that don't respond.