<unk>  affects up to 35% of the African American population in the USA. Insufficient data is available on the international frequency of<unk> . Lesions generally emerge during puberty, increasing steadily in number and size as an individual ages. The incidence of<unk>  lesions increases with age. Black people with a fair complexion have the lowest frequency of involvement.<unk>  also occurs among Asians and Polynesians, although the exact incidence is unknown. Females are affected more frequently than males.<unk>  generally emerges in adolescence and is rarely in persons younger than 7 years.
Dermatosis papulosa nigra
Xanthoma striatum palmare
Keratosis pilaris atrophicans
Hypertrichosis cubiti
Erythromelanosis follicularis faciei et colli
Keratosis pilaris atrophicans faciei
Adenoma sebaceum
Keratosis pilaris