Tendinitis (or tenosynovitis) around the wrist is very common, and deQuervain’s tenosynovitis is one of the most common that we see. It involves the tendons on the thumb side of the wrist, that move the thumb away from the palm. The causes are many, and it is seen in both men and women, in the dominant and non-dominant hand. Typical symptoms include pain along the base of the thumb, pain with lateral movements of the wrist, and swelling. Treatment options include splinting, oral anti-inflammatory medications, activity modifications to reduce strain on those tendons, cortisone injections to reduce inflammation, or possibly surgery, if all of the above options fail to relieve the symptoms.