Causes of trigger finger and thumb
Within your hand, there is a tunnel that holds the tendon that is responsible for flexing the finger. When this tunnel narrows, the tendon can’t move through it easily, and trigger finger can develop. It may also be the result of the tendon becoming inflamed.
Those who have diabetes, gout, or rheumatoid arthritis are more likely to develop trigger finger and thumb, as well as those whose job or activities force them to strongly and repetitively grip something. This can include industrial workers, farmers, and drummers.