Synopsis
Recognise first dorsal-compartment tenosynovitis from radial wrist pain, distinguish intersection, joint, fracture and nerve disorders, and deliver thumb-specific splinting, progressive rehabilitation, injection and referral safely.
- De Quervain tenosynovitis causes radial-styloid pain and tenderness worsened by thumb abduction or extension, gripping, lifting and wrist deviation.
- The WHAT or carefully performed Finkelstein-type manoeuvre reproduces first-compartment pain, but a provocative test does not replace exact localisation or trauma history.
- First-line investigation is clinical examination; routine radiographs and ultrasound are unnecessary when the pattern is typical and no trauma, mass or inflammatory features exist.
- After a fall, treat snuffbox tenderness as possible scaphoid fracture; pain several centimetres proximal to the styloid with crepitus suggests intersection syndrome.
- First-line management is temporary modification of repetitive thumb-wrist load, a thumb-spica splint that includes the wrist and thumb, and progressive return of tendon glide and strength.
- Topical NSAID may provide short-term relief when suitable; systemic NSAIDs require renal, gastrointestinal, cardiovascular, anticoagulation and pregnancy review.
- A correctly placed first dorsal-compartment corticosteroid injection is an effective next treatment when splint and activity measures are insufficient; ultrasound helps when anatomy is uncertain or prior injection failed.
- Refer persistent or recurrent disabling disease for surgical decompression, with explicit superficial radial-nerve and incomplete-release risks.
Key red flags
A fall with anatomical-snuffbox or scaphoid-tubercle tenderness requires a scaphoid injury pathway even when initial radiographs are normal.
Fever, warmth, spreading erythema, puncture or severe pain with passive thumb movement requires urgent infection assessment.
Inability to extend or abduct the thumb after laceration or trauma suggests tendon disruption and warrants urgent hand review.
Persistent altered sensation, burning or allodynia over the dorsoradial hand suggests superficial radial neuritis rather than isolated tendon-sheath pain.
A firm enlarging mass, unremitting night pain or destructive imaging requires tumour or inflammatory disease investigation.
Investigation priorities
Reproduce first-compartment pain and distinguish thumb-base joint, scaphoid, intersection and superficial radial-nerve disease.
Management branches
Atraumatic radial-styloid pain follows a typical pattern without fracture, infection, mass or neurological deficit.
- Explain which combined thumb and wrist movements overload the compartment and modify those tasks temporarily.
- Fit a thumb-spica that supports wrist and thumb without compressing the radial sensory nerve.
- Begin comfortable tendon glide and later progressive thumb and grip strengthening with task-based goals.
- Use the safest short topical or systemic analgesia only when it enables function and review after six to twelve weeks.