Trigger finger occurs when the space around the tendon of a finger becomes inflamed or swollen, making the affected finger snap when being straightened or bent. Severe trigger finger develops when the finger becomes stuck in bent position. Symptoms of trigger finger can include stiffness, popping, clicking sounds, locking or catching when bending or straightening the finger, tenderness in the palm below the affected finger and/or a bump or nodule in the palm below the affecte