Warts are cutaneous and mucosal proliferations caused by human papilloma virus infection. Common cutaneous warts are characterized by the presence of irregular whitish structures, associated with irregularly distributed, hemorrhagic reddish to black dots. Papular anogenital warts show a whitish network circumscribing areas centered by dilated glomerular or dotted vessels. Exophytic cutaneous and anogenital warts reveal multiple papillomatous fingers-like projections containing elongated and dilated vessels that are surrounded by whitish halos. Palmoplantar warts show verrucous, yellowish structureless areas with multiple irregularly distributed red to brown to black dots or linear streaks associated with interrupted skin lines. Flat warts reveal regularly distributed, tiny red dots on a light brown to yellow background.
Van Haalen FM, Bruggink SC, Gussekloo J et al (2009) Warts in primary schoolchildren: prevalence and relation with environmental factors. Br J Dermatol 161:148–152CrossRefPubMedGoogle Scholar
de Koning MN, Quint KD, Bruggink SC et al (2015) High prevalence of cutaneous warts in elementary school children and the ubiquitous presence of wart-associated human papillomavirus on clinically normal skin. Br J Dermatol 172:196–201CrossRefPubMedGoogle Scholar
Kuwabara AM, Rainer BM, Basdag H, Cohen BA (2015) Children with warts: a retrospective study in an outpatient setting. Pediatr Dermatol 32:679–683CrossRefPubMedGoogle Scholar
Myhre AK, Dalen A, Berntzen K, Bratlid D (2003) Anogenital human papillomavirus in non-abused preschool children. Acta Paediatr 92:1445–1452CrossRefPubMedGoogle Scholar