What Is Trigger Finger? A Complete Guide to Symptoms and Treatment

Trigger finger is a condition that can cause pain, stiffness, clicking, or catching when you bend or straighten a finger or thumb. In some cases, the affected finger may temporarily lock in a bent position. This guide explains what trigger finger is, its common symptoms and causes, how it is diagnosed, and the treatment options that may be considered.

What Is Trigger Finger?

Trigger finger, also called stenosing tenosynovitis, occurs when a tendon that helps move a finger or thumb does not glide smoothly through the surrounding tissue. This can lead to catching, stiffness, or locking during finger movement. The condition can affect any finger or the thumb. Symptoms may develop gradually and can range from mild stiffness to more noticeable pain and difficulty moving the affected finger.

What Are the Symptoms of Trigger Finger?

Common symptoms of trigger finger may include:

• Stiffness in the affected finger or thumb

• Pain or tenderness, particularly near the base of the finger

• Clicking or popping when moving the finger

• A catching sensation when bending or straightening the finger

• A finger that becomes temporarily locked in a bent position

• Difficulty moving the finger smoothly

Symptoms may be more noticeable after periods of inactivity, such as when you first wake up. The severity can vary from person to person.

What Causes Trigger Finger?

Trigger finger develops when the tendon and the surrounding tissues become irritated or the tendon does not move smoothly through its normal pathway. The exact cause is not always clear. Repetitive hand or finger movements may contribute to irritation in some people. Certain health conditions are also associated with a higher risk of developing trigger finger.

What Increases the Risk of Trigger Finger?

Trigger finger can affect adults and may be more common in people with certain risk factors. These can include:

• Repeated or forceful use of the hands

• Certain underlying health conditions

• Previous problems affecting the hand

• Increasing age

Having a risk factor does not mean that a person will definitely develop trigger finger.

How Is Trigger Finger Diagnosed?

A healthcare professional can usually assess trigger finger by discussing the symptoms and examining the affected hand and finger.

The examination may involve checking the finger's movement, tenderness, stiffness, clicking, or locking. Imaging tests are not always necessary, but additional evaluation may be considered when another condition needs to be ruled out.

How Is Trigger Finger Treated?

Treatment depends on the severity of symptoms, how long they have been present, and how much they affect everyday activities. Depending on the individual situation, treatment may include activity modification, rest, splinting, medication when appropriate, an injection, or surgery. A healthcare professional can help determine which option is suitable.

For more information about non-surgical options, read our guide to trigger finger treatment without surgery.

Final Takeaway:

Trigger finger can cause stiffness, pain, clicking, catching, and locking of a finger or thumb. Early assessment can help identify the problem and determine which treatment approach may be appropriate. Persistent or worsening symptoms should be discussed with a qualified healthcare professional.

Medical Disclaimer: This article is intended for general educational purposes and does not replace professional medical advice, diagnosis, or treatment.