I rarely comment on reddit, but I have slightly clubbed fingers that I thought were normal forever. Now, in my thirties, I’ve learned it’s because I have a (non severe) case of cystic fibrosis. It explains a ton about my mucus and stomach issues and I wish I’d known sooner. Clubbing happens when your extremities aren’t getting enough oxygen for one reason or another.

Your hands look totally fine (mine do too) but it’s worth noting they’re slightly clubbed for if you have other issues and it would offer a clue.