my upper part of lips have small white spots which like three white spots. They started two months back and they are not increasing but sametime it isnt coming to original pink color and recently on my lower lip exactly in the middle there looking like another one starting. I am worried can i know the reason for that white color spots on my lips.? I dont smoke and donn drink .. Somewhere i read its because of low iron in body and low water content ? Is that true or is there any other reason ?