My daughter complains her fingers are stiff and continually stretches and clicks her fingers against me, against her or something else?

Anxiety : Most often clicking fingers is an anxiety symptom type habit. It doesn’t cause any physical damage. The click or popping sounds are caused by a release of gas from the joint. Consultation with a pediatrician psychologist will help find the stressors or underlying anxiety or issues in many cases. They may be able to give counseling on ways to help decrease the behavior and deal with stressors