[Noah930]

Rusty:

The flexor tendons (or rather, their tenosynovial linings) are swollen, thereby causing the problem of pain and triggering. You can try stretching exercises and oral anti-inflammatory especially, as well as avoiding any heavy or repetitive gripping. Maybe it will go away by itself. I had it in my hands for. About 3 months last year before it faded away.

But if it's really bugging you or persistent, then go with a cortisone injection. Painful for the 5-10 seconds it takes to administer it, but 70% chance it resolves the problem. If it recurs, you can even get a second or third injection, if you're willing. But the definitive cure is a trigger finger release, which is a minor surgery that takes about 20 minutes to perform under regional or local anethesia.