Trigger finger is when a nodule forms on the finger’s flexor tendon (commonly at the A1 pulley) causing sensitivity when gripping and catching (triggering) when grasping or making a fist (Radomski & Latham, 2014).

Symptoms

Sharp pains in base of fingers

Fingers locking into composite flexion

Weakness

Loss of Active Motion in hand

Associated Diagnoses

It is most common in individuals with diabetes or rheumatoid arthritis, but can happen to anyone.

Treatments

Common medical interventions include steroid and anesthetic injections into the flexor sheath. This is combined with splinting and therapy. After this is repeated when symptoms don’t decrease, a surgeon may release the A1 pulley to prevent the tendon from catching (Radomski & Latham, 2014).
This can sometimes be relative to a Dupuytren’s contracture.

References
Radomski, M. V., & Latham, C. A. T. (2014). Occupational therapy for physical dysfunction (7th ed.). Philadelphia: Wolters Kluwer Lippincott Williams & Wilkins.