RESUMEN
Terra firma-forme dermatosis is a benign dermatologic condition that presents as dirt-colored patches and plaques, mainly affecting children and adolescents. It is resistant to conventional washing with soap and water but is easily treated with isopropyl alcohol. Clinical awareness of this condition provides a quick, simple resolution. Here we present two cases involving 14-year-old girls with uncommon presentations of terra firma-forme dermatosis. One case involved an upper extremity and the other presented with a history of knee brace occlusion. After diagnosis, both patients were successfully treated with weekly isopropyl alcohol applications.
Asunto(s)
2-Propanol/uso terapéutico , Hiperpigmentación/tratamiento farmacológico , Hiperpigmentación/patología , Enfermedades de la Piel/tratamiento farmacológico , Enfermedades de la Piel/patología , Administración Tópica , Adolescente , Biopsia con Aguja , Femenino , Estudios de Seguimiento , Humanos , Hiperpigmentación/diagnóstico , Inmunohistoquímica , Enfermedades de la Piel/diagnóstico , Resultado del TratamientoRESUMEN
Pilar sheath acanthoma is a rare, benign follicular hamartoma that frequently presents as an asymptomatic, flesh-colored papule with a central opening. First described in 1978 by Mehregan and Brownstein, these lesions generally appear on the upper lip of elderly patients. We present an interesting case of a pilar sheath acanthoma presenting on the earlobe in a middle-aged male. To the best of our knowledge, this is the first reported case of a pilar sheath acanthoma found in such a unique location.