DE QUERVAIN’S TENOSYNOVITIS
It’s a painful inflammation of tendons in your wrist and lower thumb. When the swollen tendons rub against the narrow tunnel they pass through, it causes pain at the base of your thumb and into the lower arm.
De Quervain’s tenosynovitis occurs when the tendons around the base of the thumb are irritated or constricted. The word “tendinosis” refers to a swelling of the tendons. Swelling of the tendons, and the tendon sheath, can cause pain and tenderness along the thumb side of the wrist. This is particularly noticeable when forming a fist, grasping or gripping something, or when turning the wrist.
Causes
De Quervain’s tendinosis may be caused by overuse. It also is associated with pregnancy and rheumatoid disease. It is most common in middle-aged women.
Signs & Symptoms
• Pain may be felt over the thumb side of the wrist. This is the main symptom. The pain may appear either gradually or suddenly. Pain is felt in the wrist and can travel up the forearm. The pain is usually worse when the hand and thumb are in use. This is especially true when forcefully grasping objects or twisting the wrist.
• Swelling may be seen over the thumb side of the wrist. This swelling may accompany a fluid-filled cyst in this region.
• A “catching” or “snapping” sensation may be felt when moving the thumb.
• Pain and swelling may make it difficult to move the thumb and wrist.
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