Skin discoloration that is often termed as vitiligo is caused because of immunity defects or because of heredity characters. Skin discoloration is not similar in every person and the reason for it there is 3 types of it and they vary from person to person. The cause of the defect, area affected and the nourishment of skin alters the skin discoloration. Sun, stress, irritation and hormones also become causes that damage melanocytes. This video details all three phases of discoloration that can occur in man. The exact process happening within the skin is produced fine as an animation. The types of melanin present in the dermal cells are also the reason for differential discoloration.