Every once in a while ill get a rash on my upper lip and I have no idea what the cause is, or what type of rash it is. The rash is flat, and smooth and doesnt cause any irritation but from far away it appears as if I have a moustache. They are very tiny dots all across my upper lip. I know I get them from eating rock candy but when I dont eat any type of candy ill get the rash for no reason what so ever. I have been getting this since I was 11 and I am 16 now and have no idea why, and it can be very embarressing to find this rash at the most random times. The rash usually last about three days and slowly fades away.