Trigger finger also known as stenosing tenosynovitis, is the condition where one of your fingers (including your thumb) gets bent and stuck in that position and then straightens out with a snap. This is similar to the position your fingers take when pulling and releasing a trigger on a gun and is therefore referred to as trigger finger. In severe cases of trigger finger, the finger or thumb may remain stuck in the bent position.
Trigger finger affects only 2 to 3% of most people and the condition tends to be more common among women than men. People with diabetes are more likely to develop trigger finger as well. Most cases of trigger finger get better without any treatment. For severe cases, surgery is a treatment option and generally results in full recovery.