Have you ever had a finger get stuck in a bent position, then pop straight with a snap? That locking and snapping has a name: trigger finger. It is common, it is treatable, and it usually has nothing to do with anything you did wrong. Repeated gripping, from gardening tools to phones to steering wheels, is often enough to set it off, and late summer yard work tends to bring on a wave of new cases.
What is trigger finger?
Trigger finger happens when a tendon in your finger or thumb has trouble sliding through its pulley, a small ring of tissue that holds the tendon close to the bone. When the tendon swells or a small nodule forms on it, the tendon catches as it tries to pass through that pulley. That catch is what makes the finger lock, then release with a snap. A 2024 review in BMC Musculoskeletal Disorders described trigger finger as one of the most common hand conditions doctors see, and noted that newer options such as shockwave therapy and ultrasound-guided procedures now sit alongside older treatments like splinting (Donati et al., 2024, BMC Musculoskeletal Disorders).
What causes trigger finger?
Trigger finger shows up most often in people whose hands do a lot of repetitive gripping. A 2025 review in American Family Physician grouped trigger finger with carpal tunnel syndrome and tennis elbow as one of the most common work-related upper extremity conditions, tying it directly to jobs and hobbies that involve repeated hand motion. Gardening, knitting, using hand tools, playing a musical instrument, and typing all fall into that category. Diabetes, rheumatoid arthritis, and certain other health conditions can raise the risk too, since they change how tendons and surrounding tissue hold up over time.
What are the symptoms of trigger finger?
The first sign is often stiffness in a finger, worse in the morning and easing up as the hand warms up. As it progresses, you may notice a small bump at the base of the finger, a popping or clicking feeling when you bend or straighten it, or the finger locking in a bent position that you have to straighten with your other hand. Some people describe a sensation similar to the numbness and tingling that shows up with carpal tunnel syndrome, though the two conditions affect the hand differently and call for different care.
How is trigger finger treated?
Most cases start with conservative care: resting the hand, splinting the finger at night, and gentle stretching during the day. A corticosteroid injection is often the next step if symptoms do not settle down on their own. For people who do not improve with those approaches, a small outpatient procedure can release the pulley and free up the tendon. A 2025 study in Hand Surgery and Rehabilitation looked at an ultrasound-guided release for trigger thumb in 42 patients and found pain scores dropped from an average of 7.2 to 1.3 out of 10, with hand function scores improving just as sharply (Ferreira Villanova et al., 2025, Hand Surgery and Rehabilitation). Outside of injections and surgery, some people work with a chiropractor or hand therapist on soft tissue and joint mobility work in the hand, wrist, and forearm to ease tension while symptoms settle.
If a finger keeps catching or locking, it is worth having it checked rather than waiting it out. Trigger finger tends to get worse on its own, not better, and simple early steps like rest and splinting usually work best before the problem advances. The same repetitive strain that leads to trigger finger can also contribute to conditions like De Quervain’s tenosynovitis, so it is worth paying attention to hand and wrist habits overall.
Sources
- Donati D, Ricci V, Boccolari P, et al. From diagnosis to rehabilitation of trigger finger: a narrative review. BMC Musculoskeletal Disorders. 2024;25(1):1061.
- Hall S, Compton MR. Common Occupational Upper Extremity Musculoskeletal Disorders. American Family Physician. 2025;111(5):451-458.
- Ferreira Villanova FJ, Martinel V, Marès O. Ultrasound-guided trigger thumb release. Hand Surgery and Rehabilitation. 2025;44S:102084.
