Top of the page
A trigger thumb is a thumb stuck in a bent position. It can also happen to a finger. It happens when the tendon that bends and straightens the thumb or finger can't slide smoothly under the ligaments that hold the tendon against the bones. In most cases, this is caused by a bump (nodule) that forms on the tendon. The cause of the bump isn't known. Some cases may be caused by problems with how the muscle develops.
Your child's bent thumb or finger may straighten out on its own.
A trigger thumb or finger can be painful. But it normally isn't a serious problem.
Your child may need surgery if the thumb or finger keeps locking in a bent position.
Follow-up care is a key part of your child's treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse call line if your child is having problems. It's also a good idea to know your child's test results and keep a list of the medicines your child takes.
Watch closely for changes in your child's health, and be sure to contact your doctor if:
Go to https://www.healthwise.net/patientEd
Enter T355 in the search box to learn more about "Trigger Thumb and Trigger Finger in Children: Care Instructions".
Adaptation Date: 11/17/2021
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
To learn more about Healthwise, visit Healthwise.org.
© 2006-2021 Healthwise, Incorporated. All rights reserved. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.