How is it diagnosed?

Typically, your doctor will manually observe how your hand and thumb respond to various degrees of external pressure.

He’ll follow this preliminary observation with a gesture commonly known as the Finkelstein test, where he’ll gently attempt to bend your thumb across your palm while curling your fingers to form a fist. This basic test protocol stretches your tendons and, if you notice a sharp increase in pain, all signs point to de Quervain’s.

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