Trigger Finger or Thumb

What is a Trigger Finger/Thumb?

Formally known as stenosing tenosynovitis, if you find a finger a thumb stuck in a bent position, this is termed as a trigger finger or thumb. Trigger finger is a condition that makes your fingers or thumbs difficult to move, and is commonly caused by repetitive or forceful use of the fingers or thumb and can be related to your occupation where gripping or grasping is necessary.

A trigger finger can be painful and is caused by the narrowing of the sheath that surrounds the affected finger’s tendon. It may happen due to the tendon sheath becomes swollen or if a small lump forms on the tendon. 

Trigger finger is more common in women above the age of 50 and is associated with medical conditions such as diabetes, gout, and osteoarthritis, and is more common in women than men. The thumb or middle or ring finger is usually affected and more than one finger can be affected at the same time.

What are the symptoms of a Trigger Finger/Thumb?

Trigger Finger may affect any fingers, including the thumb. More than one finger may be affected at a time and symptoms are often worse in the morning. Symptoms of Trigger Finger/Thumb may progress from mild to severe and include:

• Finger or thumb locked in a bent position
• Stiffness of your fingers, in the morning
• Sensation of clicking or popping when the finger is used
• Tenderness and pain at the base of the affected finger
• A nodule or bump where the base of the finger lies in the palm
• Fingers locked in a bent position, often suddenly popping straight. You may sometimes need to use your other hand to gently straighten your finger.

are the risk factors for Trigger Finger/Thumb?

Some factors that put you at risk of developing Trigger Finger/Thumb include:

• Gender: Trigger Finger/Thumb is more common in women above the age of 50.
• Repeated Gripping: You are at a higher risk if you are in an occupation or have a hobby that involves repetitive hand use and prolongued gripping.
• Certain Health Problem: Chronic conditions such as diabetes and rheumatoid arthritis gives you a higher risk of developing Trigger Finger/Thumb.

How is a Trigger Finger/Thumb diagnosed?

Checking of medical history and physical examination by a doctor without the need for special testing.