I don't know if this is the right forum for this, but none of the others seemed any better.
I am a 15 year old male. I have noticed a weird problem in my right thumb. When I bend it, about halfway through, there is a resistance in the joint closest to the tip, and then it "pops" and continues to bend. There is usually no pain when I do this, and even when there is it is only a little pain. It does this consistently for a while, but will come to a point where it won't catch and pop, only to start again later.
Any ideas on what this could be?