Tinea capitis is a fungal infection caused by dermatophytes, frequent in children but uncommon in the neonatal period. Kerion Celsi is the inflammatory manifestation of tinea capitis secondary to host immunologic responses and its occurrence in newborns is extremely infrequent. We describe three neonates with the diagnosis of kerion Celsi. The isolated dermatophytes were Trichophyton mentagrophytes var. mentagrophytes in two patients and Trichophyton rubrum in the third. Both patients with T. mentagrophytes referred an indirect contact with rabbits and were successfully treated with systemic antifungal (griseofulvin and fluconazole). The patient with T. rubrum had a father with a tinea manuum and both received just topical antimycotic treatment.

Presentación de casos clínicos RESUMENLa dermatitis por Paederus es un tipo particular de dermatitis de contacto causada por la pederina contenida en la hemolinfa de un pequeño insecto del género Paederus. Se caracteriza por una erupción vesicopustulosa sobre una base eritematosa de rápida aparición, en zonas descubiertas, con el antecedente de exposición al aire libre. El diagnóstico se realiza por las manifestaciones clínicas típicas y el contexto epidemiológico. El objetivo de esta publicación es presentar un caso clínico, y evaluar la epidemiologia y las manifestaciones clínicas de la dermatitis de contacto por Paederus. Palabras clave: Paederus, pederina, dermatitis de contacto, insectos. SUMMARYPaederus dermatitis is a peculiar contact dermatitis caused by pederine contained in the hemolimph of a small insect of the genus Paederus. It is characterized by vesico-pustulous eruption arising over an erythematous background, of sudden onset, over exposed areas of the body, and the history of outdoor activities. Diagnosis is based on the typical clinical features and the epidemiological context. The aim of this publication is to report a case and evaluate the epidemiological and clinical characteristics of Paederus dermatitis.