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European Journal of Dermatology

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Penile terra firma-forme dermatosis in a child: ultrastructural observation and topical ethacridine lactate and tacrolimus treatment Volume 29, numéro 2, March-April 2019

Illustrations


  • Figure 1
Auteurs
Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
a These authors contributed equally

Terra firma-forme dermatosis (TFFD) or Duncan's dirty dermatosis is an acquired benign disorder that predominantly affects children and young adults with normal hygiene habits. Asymptomatic brown-grey dirt-like patches or plaques are typically distributed on the neck, face, trunk, and ankles, and cannot be removed by standard washing with detergents, but disappear completely after rubbing with 70% ethyl or isopropyl alcohol (alcohol swab test) [1-3]. To date, histopathological and ultrastructural [...]