Trigger Finger is a condition that involves the pulleys and tendons in the hand that move the fingers.
Trigger finger occurs when this tendon or its lining begin to swell. This makes it difficult for the tendon to pass under the pulley, which surrounds it at the base of the finger. This difficulty manifests as a catching or triggering feeling in the finger or thumb.
Repetitive use, an injury to the palm, or other medical conditions such as diabetes may cause trigger finger. Trigger finger often starts with discomfort at the base of the finger, and progresses to catching or locking sensations in the middle knuckle of the finger or end knuckle of the thumb.
Wearing a splint, taking oral anti-inflammatory medicines, or injecting anti-inflammatory medicines around the tendon may reduce the swelling around the enlarged tendon. Treatment may also consist of changing activities to reduce stress on the hands and fingers. If these methods fail, surgery may be recommended to release compression on the swollen tendon. This is usually done on an outpatient basis without a general anesthetic.