De Quervain's Tendinitis (De Quervain's Tendinosis)

De Quervain's tendinitis occurs when the tendons around the base of the thumb are irritated or constricted. The word "tendinitis" refers to a swelling of the tendons. Thickening of the tendons can cause pain and tenderness along the thumb side of the wrist. This is particularly noticeable when forming a fist, grasping or gripping things, or when turning the wrist.



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