For a couple of years now, I've noticed the same pattern: after keeping my toenails polished over the warm sandal-wearing months, my nails develop white splotches, particularly on the big toe. It's not fungus, and it's not the kind of white spot you get if you hit your nail. I can remove the white spots by buffing the nail, which shows that the whiteness is only in the top layers of the nail.
It's not that big a deal, really, except that it means that I'm embarrassed to go to a salon to get a pedicure when I have the spots, because they LOOK like they could be the start of a fungal infection. After a good buffing and a winter of being polish-free, my nails look just fine, but I know the spots will come back after I start to polish them again.
The simplest solution would be to give up nail polish, but I love the way my toes look all shiny and colorful in my sandals. I've heard that the spots can be caused by an allergic reaction to something in the polish, so I'm thinking about pitching all my drugstore polishes and trying a "natural" polish, maybe even a water-based one.
Does anyone else have this problem, and have you found a solution? Spring is coming soon, and my toes are itching for some air!