In reply to Bigfloppyfinger:
Firstly I'd recommend buying this -
http://davemacleod.com/shop/makeorbreak.html - it's a brilliant book and invaluable for all sorts of climbing injuries
Next, stop taking time off - finger injuries tend to heal much better with active rest. It's tough and you have to be really disciplined about what and how you climb but your fingers will thank you.
Thirdly, stop crimping! Work on your open handed technique - it will allow you to climb on it while you're rehabilitating it and also help you avoid injuries in the future.
Finally try cold water treatment. Once the finger is past the inflamed stage I found this helped to promote blood flow -
http://onlineclimbingcoach.blogspot.co.uk/2010/05/pulley-injuries-article.h...
I partially ruptured one of my pulleys at the start of April. It was so painful I struggled with the handbrake of my car!! I had a week off climbing completely (well, apart from a bit of super easy trad bimbling at Stanage) but was back at the wall being very
very careful after that. Dropping my grade, disciplined open handed climbing (I taped the middle knuckle of my finger to stop myself from crimping accidentally), dropping off anything that hurt, cold water treatment once or twice a day - it was tough and demoralising but it's well on the mend now and I've managed to maintain my fitness and stay climbing at a similar level.