What is De Quervain's tenosynovitis?
A person with De Quervain's tenosynovitis has inflammation of the tendons in the thumb. The inflammation occurs in two tendons: the extensor pollicis brevis and abductor pollicis. De Quervain's tenosynovitis is caused by overuse of the tendons that move the thumb, which results in irritation and inflammation.

What are the symptoms of De Quervain's tenosynovitis?
Symptoms of De Quervain's tenosynovitis include finger pain, hand pain, wrist pain, and tenderness over the area where the thumb joins the wrist. Other symptoms include pain during thumb extension and hand swelling in the area where the thumb joins the wrist.

How does the doctor treat De Quervain's tenosynovitis?
Treatment for De Quervain's tenosynovitis includes rest, cold compresses, elevation, splinting, and nonsteroidal anti-inflammatory medications for pain. Some may benefit from a corticosteroid injection in the area of the tendon.