Trigger finger is characterized by inflammation and narrowing of the pulley affecting the digit, commonly leading to popping or catching during movement, particularly in the 3rd or 4th digit. Clinical symptoms may include painless clicking, painful catching, stiffness, swelling, and locking of the finger, with individuals with diabetes being more predisposed. Treatment options encompass physiotherapy measures like rest, splinting, exercises, and various modalities, as well as potential surgical intervention if conservative methods fail.