<unk>  or nevus achromicus is a depigmentation problem in skin which can be easily differentiated from vitiligo. Although age factor has not much involvement in the<unk>  but in about 19% of the cases these are noted at birth. Their size may however grow in proportion to growth of the body. The distribution is also fairly stable and are nonprogressive hypopigmented patches. Those with<unk>  may be prone to sunburn due to the lack of pigment, and the patient should use good sun protection.
Sunscreen should be applied to all exposed skin, since reduced tanning of normal skin will decrease the contrast with hypopigmented skin. Most patients with<unk>  do not pursue treatment for their lesion. There is no way to repigment  the skin. If, however, the lesion is of cosmetic concern, camouflage makeup is effective. If the lesion is small one could also consider excision.
Nevus depigmentosus
Nevus comedonicus
Naevus Lipomatosus superficialis
Nevus anemicus
Dermatosis papulosa nigra
Trichostasis spinulosa
Epidermodysplasia verruciformis
Keratosis pilaris