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Updated: May 27, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
Use of dermoscopy for diagnosis of exogenous ochronosis
Sandra Adolfina Reyes Romero1, Priscilla Maria Rodrigues Pereira, Adriana Valkiria de Oliveira Mariano
1Hospital Universitário Getúlio Vargas, Universidade Federal do Amazonas, Manaus, AM, Brasil. sandra.rreyes@gmail.com
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.
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