<unk>  is a loss of pigment in the 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. The exact cause of<unk>  is still not clearly understood. A sporadic defect in the embryonic development has been suggested to be a causative factor. It has been described as "localised albinism", though this is incorrect. 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 lipomatosus superficialis
Nevus comedonicus
Adenoma sebaceum
Condylomata lata
Nevus anemicus
Hypertrichosis cubiti
Nodular lichen myxedematosus