White marks on skin that appear and disappear? i have been having white marks appear on my body the everyday for the last five days. they are like my skin has no pigment on the area at all. after i notice the marks, it disappear in about 15 to 30 mins. i

You : You are going to have to see a dermatologist for a complete evaluation. Since they are coming and going, it could represent hives though it is atypical. It could also represent a vascular disease such as reynaud's. If the white patches stay, it could represent vitiligo or tinea versicolor, but it sounds like they come and go. Please have a complete evaluation for your symptoms as they are very unusual.