de Quervain’s Tenosynovitis | Overview

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What is de Quervain’s tenosynovitis?

De Quervain’s tenosynovitis occurs when the 2 tendons around the base of your thumb become swollen. The swelling causes the sheaths (casings) covering the tendons to become inflamed. This puts pressure on nearby nerves, causing pain and numbness.

Written by familydoctor.org editorial staff

Reviewed/Updated: 04/14
Created: 11/09

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