In reply to CameronDotSmith:
Sorry slow reply. Briefly... Mine is similar and because I've been lame at doing my physio it's still there 6 months on. It was probably sustained by repeated crimping (no pop or acute crisis point) but only really hurts when the bump comes into pressure contact with something ie jugs and some larger pinches, bar and rings, steering wheel etc. At its worst I couldn't bend my finger which was swollen and aching to the point it was keeping me awake.
Physio advice was that rest was ideal but not essential as long as exercises and careful climbing maintained. Priority on all the forearm ag/antag balancing work with increasingly weighted wrist and finger curls, plus some self-care massage and icing. This was working well but then I got busy and lapsed the rehab meaning, although it has dulled and no longer hurts (unless provoked by jugs), I still have a bump and I tend to rely on taping when climbing a.) as compression and support and b.) to remind me my finger is there and not to launch it at any irritating holds. Objectively I am getting away with climbing most things at the moment, but am sure it is not sustainable.
So I guess all that I can say is if you want to do it properly and actually heal, listen to an expert and do your physio, and warn you that being impatient/not paying it enough attention risks sub-par climbing purgatory. But that is a common story and I'm sure you already knew that!