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: Sandra Adolfina Reyes Romero, Priscilla Maria Rodrigues Pereira, Adriana Valkiria de Oliveira Mariano, Fábio Francesconi, Valeska Albuquerque Francesconi
• Journal: Anais brasileiros de dermatologia (An Bras Dermatol) 2011 Jul-Aug Vol. 86 Issue 4 Suppl 1 Pg. S31-4 ISSN: 1806-4841 [Electronic] Spain
• PMID: 22068765 (Publication Type: Journal Article)

Chemical References

• Dermatologic Agents
• Hydroquinones

Topics

• Adult
• Dermatologic Agents (adverse effects)
• Dermoscopy
• Facial Dermatoses (chemically induced, diagnosis)
• Female
• Humans
• Hydroquinones (adverse effects)
• Hyperpigmentation (diagnosis)
• Middle Aged
• Ochronosis (chemically induced, diagnosis)