my thumb nails have changed in appearance!why?
The change in appearance may be a sign of serious condition depending on the color. If it has turned yellowish, this can be a sign of lung infection. If it has turned half white and half pink, it can be a sign of kidney disease. You should go for a checkup if the color does not go back to normal in two days. Go to http://www.thaimedicalnews.com/medical-tourism-thailand/fingernails-texture-colour-symptoms-health-problems/ for detail.
If it has changed its colour then it is due to fungal infection !Nail colour turns green and blue ! My nail also changed its appearence due to fungal attack !