Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., verrucae palmares et plantares, and near or on mucous membranes, i.e., condylomata acuminata) and flat (verrucae planae), and by the type of inciting papillomavirus, HPV 6 and 11 for condylomata acuminata, for example, and HPV 5 and 8 for epidermodysplasia verruciformis.