Depigmentosus or Depigmented Nevus
Nevus Depigmentosus (ND) is a nonprogressive hypopigmented macule or patch that remains relatively stable in size and distribution. Its size however can grow in proportion to body growth. Depigmented nevi or nevi are the result of abnormalities in the functioning of the melanocytes which produce little pigmentation making them appear white patches on the skin characteristics.
A nevus Depigmentosus not usually difficult to distinguish from vitiligo.
Pityriasis Alba
The white patches of skin that causes pityriasis alba is a common problem in children. The bright spots of hypopigmentation and depigmentation are easily confused with vitiligo. They usually appear mostly on face but also occasionally in other parts of the body. The spots of Pityriasis Alba are more frequent during the winter and children are more likely than girls. Creams humidifier can facilitate the healing process. In severe cases, psoralen therapy with or without laser is often used.