Index finger doesn't straighten

I have no idea how this happened. No pain. No redness. No bleeding. No soreness. I noticed a few days ago that my index finger doesn't straighten at the middle (PIP) joint. Any ideas on what this might be? I'll be seeing my chiropractor in a few days. Would buddy taping it in the meantime be helpful? Thanks!

Pully injury or rupture ? 

It looks like trigger finger.

Yes, I have a bump! Thanks, guys! I have no idea how it happened, though.

Don’t climb for a couple weeks.
Take a good amount of ibuprofen.
Splint it slightly bent if possible.
You won’t need an injection unless it persists for 4-6 weeks.
Good luck.

Do you have Scandinavian heritage? Could be Dupuytren’s.

Might be best to actually see an ACTUAL MD ie an orthopedic physician

Nathan Z wrote: Do you have Scandinavian heritage? Could be Dupuytren’s.

Dupuytrens takes years to progress. It doesn’t just appear suddenly.

Forthright wrote: Might be best to actually see an ACTUAL MD ie an orthopedic physician

I second this. Worst thing is to misdiagnose and not be able to climb (or do whatever else people do with their fingers) for years/ever. Probably worth the time/money/inconvenience to get it checked out now, cause it doesn't sound good.

Thanks, Everybody!

JCM wrote:

Dupuytrens takes years to progress. It doesn’t just appear suddenly.

And in my experience it starts with the pinkie finger.