You know, about 2.5 months ago I was really sick with a nasty virus. At the time, I said it felt like I was the sickest I'd been in my entire adult life. It was nothing horribly serious -- just a bad sore throat, aches, headache, which turned into a sinus infection that I had to take antibiotics to get rid of. I never had much a a fever though, but I'm not sure if that matters.
Given that the dents are halfway down my fingernails at this point (indicating something that happened a while back), I wonder if that illness could have been the cause?
Anyone else have experience with this?