Trigger finger and trigger thumb occurs when a nodule is present on the flexor tendon of the finger or thumb, and as such, the nodule is unable to clear the pulley of the finger or thumb and ...

When this occurs in the finger joints, people also call it “trigger finger ... of the finger or toe. The tendon may eventually become inflamed and develop nodules on its surface.

tendons will swell inside one of these pulleys and the tendon will have difficulty moving through the pulley. This makes it hard to extend or flex your finger. This condition is called trigger finger.

In severe cases, you might have to use your opposite hand to straighten your finger out after you bend it. Trigger thumb can also cause a nodule, or "bump," on the tendon, which you can feel at ...