I have a similar question...
One of the aunts was born with a toenail that curved sideways. We didn't think anything of it, and it didn't seem to bother her at all. For the first few months, she seemed to be really uncoordinated, but we thought that might have been because of poor eyesight through her big afro puff head. She also seemed really content to stay in pretty much one spot for long periods of time, and didn't seemed interested to run around with the other aunts. Well, recently her toenail, the curved one, fell off. I don't know how, I just noticed it missing one day. No blood. The craziest thing, and it might be coincidence, but since that happened, her coordination has been much better, and she hangs out with the other aunts more. Could the curved nail have been throwing her off balance? Now, it's starting to grow back, curved, and I'm curious - can we keep it trimmed off?