In reply to scelestus: Try this.
Put your hand flat on a table palm up.
Hold your ring finger down and very carefully and curl your pinky up.
If you feel any pain at all then stop.
Take a week or so off and then go back to climbing but on easy routes. Before you climb tape your ring finger to your pinky. Stop if it gets the slightest bit painful.
It sounds like what happened to me. After it happened it was really confusing since on most type of holds including crimps it was fine but every so often I would get a shooting pain through my ring finger. I took a lot of time off using ice therapy but every time I came back the same thing would happen. Also, it would sometimes happen doing every day things like opening a jar or using a door handle
Eventually I came across an article in one of the american climbing magazines that recommended doing the test above. It said that the problem was when you were gripping something with the pinky curled up.
After I started taping the fingers together it was fine. I also started avoiding crimping and working on open hand. At first I dropped a couple of grades but I stuck with it and now I'm climbing a higher grade than I was before.