What is trigger thumb and how is it treated?

Thumb joint with: Limited mobility and clicking, pain where the thumb meets the palm, often called the finger palm crease, pressure causing pain can be a sign of stenosing tenosynovitis or trigger finger it is treated by antiinflammatories, corticosteriod injection and perhaps surgery if symptoms do not go away.

Tendon swelling: Trigger finger or thumb occurs when the digital flexor tendon begins to swell, from either trauma or overuse. As it swells it becomes stuck at the entrance of the finger, based in the palm at the base of the finger. This will cause occasional clicking, stiffness, and occasionally overt locking. Treatment is rest, antinflammatories, occasionally steroid injections, or a simple trigger release.