title: Use of dermoscopy for diagnosis of exogenous ochronosis.
abstract: Exogenous ochronosis consists of chronic hyperpigmentation of areas previously treated with topical agents such as hydroquinone, resorcinol, antimalarials and phenol. Early diagnosis allows to promptly suspend the causative agent and it is imperative since the available therapeutic options are scarce and have presented so far unsatisfactory results. Three cases of exogenous ochronosis on the face which were diagnosed with the use of dermoscopy are presented. Dermatoscopy showed blackish-gray amorphous structures, some obliterating the follicular openings. Histopathological examination confirmed the diagnosis.
authors: Hospital Universitário Getúlio Vargas, Universidade Federal do Amazonas, Manaus, AM, Brasil. sandra.rreyes@gmail.com
authors: Sandra Adolfina Reyes
authors: SA
authors: Romero
authors: Priscilla Maria Rodrigues
authors: PM
authors: Pereira
authors: Adriana Valkiria de Oliveira
authors: AV
authors: Mariano
authors: Fábio
authors: F
authors: Francesconi
authors: Valeska Albuquerque
authors: VA
authors: Francesconi
mesh_terms: D000328:Adult; D003879:Dermatologic Agents / Q000009:adverse effects*; D046169:Dermoscopy; D005148:Facial Dermatoses / Q000139:chemically induced* / Q000175:diagnosis; D005260:Female; D006801:Humans; D006873:Hydroquinones / Q000009:adverse effects*; D017495:Hyperpigmentation / Q000175:diagnosis; D008875:Middle Aged; D009794:Ochronosis / Q000139:chemically induced* / Q000175:diagnosis
chemical_list: D003879:Dermatologic Agents; D006873:Hydroquinones