Trigger finger occurs when the tendons in your finger or thumb become inflamed, leading to irritation as they pass through the sheath that surrounds them. This inflammation causes the tendon to thicken, making it difficult to move smoothly.
Over time, this results in the characteristic locking or catching sensation. The underlying cause is the repeated friction or stress on the tendons, often due to frequent gripping motions or hand use. While anyone can develop trigger finger, those engaged in activities that strain the hand muscles are more likely to experience this condition.
Several factors can increase your chances of developing trigger finger, including the following:
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