Rest the thumb and avoid repetitive gripping, pinching, or forceful use
Use a thumb splint or brace to keep the thumb in a neutral position
Apply ice for 15 to 20 minutes at a time to reduce pain and swelling
Take over-the-counter anti-inflammatory pain relievers if safe for you
Do gentle thumb stretching and range-of-motion exercises if advised
Ask a clinician about a corticosteroid injection if symptoms persist
See a hand specialist if locking, pain, or stiffness continues
Consider surgery if other treatments do not work or the thumb stays stuck
Seek urgent care if there is severe swelling, redness, fever, or inability to move the thumb