Hello and welcome I have a similar problem, in which my right index finger gets sore after awhile. It worries me as well, and I've tried to compare my fingers to see if the knuckles look or feel any different, or if there's any swelling, etc… but there's nothing. I hope that's a good sign. lol maybe just try going a bit easy on the sore thumb ... I don't mean stop, 'cos I know I couldn't do that. But maybe try being a bit more gentle on that one joint and see if the soreness gets any better or not. That works for me sometimes.

… I can't believe there's a community for this! I'm amazed (and relieved) to know there are other people like me out there, who feel addicted to knuckle cracking and realize there's more to it than it may seem.

I'm addicted to the feeling of cracking my fingers, wrists, toes, and ankles (I can never do the ankles "on purpose" though, it usually happens when I descend stairs or flex my legs after sitting still for awhile). I have a lot of tension, and cracking relieves that tension. Also, I suffer from anxiety, and I've realized that whenever I'm starting to feel anxious, the first thing I'll do is grab my hands.

A couple things: I can't crack my big toes, is there any reason why not? And I've read about cracking elbows (I actually only learned about that today, when on a whim searched "knuckle cracking" on Google). How does one do this? Anyway, I'm so glad to have found this community, and I'm definitely looking forward to talking with fellow joint crackers soon!

-Evie.