Stiffness in my knuckles...

ya I think you will be fine I don't think that it will cause problems Ive had it happen to me a couple times I don't think it will cause any issues maybe just take like a 5 minute break when you start to feel it, it usually goes away for me when I do that

So I know I'm a little late here, but this just happened to me. I've been playing guitar for 14 years and it happened to me now for the first time. I was learning some John Petrucci stuff and practing (not just playing) way more than normal and my kuckles gradually started getting more and more sore. Even my wrist got a little irritated. My thumb was actually the first (and worst) to get sore from pressing really hard on the back of the neck. Then my other fingers, pinky last so it seems to be from strained usage. I had been pressing the strings extra hard and deliberately lifting my fingers off the strings after playing a note to get them out of the way. This seems to cause my fingers to be really tense and stiff while I play which I think contributes to the problem. "Luckily" I broke a string and haven't taken a trip to the music store yet so I'm being forced to rest them. It's been about 5 days and they're almost back to normal (after 3 weeks of irritating them). My theory is that I need to focus on keeping them relaxed and not apply any more force than is needed and focus on efficiency of motion. My second theory, which I'm not a fan of, is it's just age...I'm 27 now. Either way, next time I feel them get sore I'll probably ice them when I'm done since inflammation causes pain and probably goes on to irritate them more. Hopefully it's a once every 14 years thing.

I think it's not that serious. Ive been playing guitar for years and somehow have experienced that kind of thing and now its not bothering me anymore. Your hands would get used to it, and somehow sort of practicing your hands. It would help you and make you play best in your guitar.

So I know I'm a little late here, but this just happened to me. I've been playing guitar for 14 years and it happened to me now for the first time. I was learning some John Petrucci stuff and practing (not just playing) way more than normal and my kuckles gradually started getting more and more sore. Even my wrist got a little irritated. My thumb was actually the first (and worst) to get sore from pressing really hard on the back of the neck. Then my other fingers, pinky last so it seems to be from strained usage. I had been pressing the strings extra hard and deliberately lifting my fingers off the strings after playing a note to get them out of the way. This seems to cause my fingers to be really tense and stiff while I play which I think contributes to the problem. "Luckily" I broke a string and haven't taken a trip to the music store yet so I'm being forced to rest them. It's been about 5 days and they're almost back to normal (after 3 weeks of irritating them). My theory is that I need to focus on keeping them relaxed and not apply any more force than is needed and focus on efficiency of motion. My second theory, which I'm not a fan of, is it's just age...I'm 27 now. Either way, next time I feel them get sore I'll probably ice them when I'm done since inflammation causes pain and probably goes on to irritate them more. Hopefully it's a once every 14 years thing.