Worldwide,<unk>  affects an estimated 30 to 50% of the adult population, and around 50 to 80% of all adolescents. It is more common in women than in men, and it is often present in otherwise healthy individuals. The skin condition is prevalent in persons of all ethnicities, and no particular ethnicity is at higher risk for developing<unk> . Although<unk>  may manifest in persons of any age, it usually appears within the first decade of life and is more common in young children. In most cases, the condition gradually improves before age 30, but it can persist longer.
Keratosis pilaris
Erythrokeratodermia variabilis
Tinea imbricata
Dermatosis papulosa nigra
Dermatosis neglecta
Hydroa vacciniforme
Telogen effluvium
Epidermodysplasia verruciformis