Inflammation of the lining of the sheath that surrounds the tendon. The usual cause is excessive friction caused by repetitive movements; bacterial infection is a unusual cause. The wrists and hands are most commonly affected in tenosynovitis. Symptoms include pain, swelling, and tenderness over the tendon.
Treatment is with nonsteroidal anti-inflammatory drugs (NSAIDs) or a local injection of corticosteroid drugs. However, if infection is the cause, antibiotics are administered. A splint to immobilize the joint or surgery can also be required.