See a doctor to confirm it is a ganglion cyst
Rest the joint and avoid activities that worsen it
Wear a splint or brace if advised
Use ice to reduce discomfort or swelling
Take over-the-counter pain relievers if safe for you
Do not try to pop, puncture, or drain it yourself
Ask a clinician about aspiration to drain the cyst
Ask a clinician about surgical removal if it keeps returning or causes pain
Seek medical care if it grows quickly, becomes very painful, or affects movement