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Trigger fingers are a common cause of discomfort in the palm, often associated with a distinct locking of the affected digit. The digits most commonly involved are the ring finger and the thumb, though any digit can be affected. Patients with Carpal Tunnel Syndrome have a higher propensity to develop trigger finger, and again the cause is usually unknown. Symptoms can sometimes resolve spontaneously, and rest and NSAID's can provide relief. Steroid injections can be curative in about 50% of cases. Surgery, which involves opening the tendon sheath at the base of the finger, provides a reliable cure if conservative treatment fails.