What are the first signs of de Quervain's tenosynovitis?

De Quervain's tenosynovitis affects the tendon coverings that help move the thumb along the wrist. Early discomfort may arise when opening a jar, turning a key, lifting a baby, using a phone, or making a pinch grip. Swelling or a thickened feeling may develop near the base of the thumb, and pain can extend a short distance up the forearm. The area may feel sore when pressed, and repeated thumb or wrist movements can increase symptoms.

This pattern is compatible with [Thumb Pain](/symptoms/thumb-pain/) and [Wrist Pain](/symptoms/wrist-pain/), but pain after an injury, marked swelling, or altered sensation can have another cause. A clinician can assess the tendons, joints, and nearby nerves.

Reduce activities that repeatedly provoke thumb-side pain without stopping all hand use. Keep the wrist in a neutral position, take short breaks from gripping, and use larger handles where practical. A clinician or therapist may suggest [Splinting](/treatments/trauma-and-fracture-care/splinting/) to rest the thumb and wrist, followed by [Hand Therapy](/treatments/physiotherapy-and-rehabilitation/hand-therapy/) for graded movement and strength. If symptoms remain troublesome, options such as a [Cortisone Injection](/treatments/non-surgical-orthopedics/cortisone-injection/) can be discussed.

Arrange assessment when pain persists, interferes with sleep or hand function, or follows a fall or direct blow. Seek prompt care for severe swelling, a visibly abnormal thumb or wrist, inability to move the thumb, fever with redness and warmth, or new numbness or colour change in the hand.

Does the pain follow the thumb tendons, or could it come from the joint or a nerve? Should I use a thumb-and-wrist splint, and for how long? Which hand activities can I continue while symptoms settle?