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Case Report • An. Bras. Dermatol. 94 (6) •  2019 • https://doi.org/10.1016/j.abd.2018.09.002   copy

Use of methotrexate in an exuberant case of confluent and reticulated papillomatosis of Gougerot and Carteaud in a teenager☆ ☆ How to cite this article: Mattos ABN, Brummer CF, Funchal GDG, Nunes DH. Use of methotrexate in an exuberant case of confluent and reticulated papillomatosis of Gougerot and Carteaud in a teenager. An Bras Dermatol. 2019;94:717-20. ,☆☆ ☆☆ Study conducted at the Dermatology Service, Hospital Universitário Polyodoro Ernani de São Thiago, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.

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Abstract

Confluent and reticulated papillomatosis of Gougerot and Carteaud is a rare dermatosis with onset during puberty, more prevalent in females than in males. The pathogenesis is unknown, but some theories suggest either a keratinization or endocrine disorder. The lesions are verrucous, brownish, hyperkeratotic papules or spots that coalesce in a confluent and/or reticulated pattern. This report presents a case with extensive cutaneous involvement associated with acanthosis nigricans and good response to treatment with methotrexate.

KEYWORDS
Diagnosis; Hyperpigmentation; Papilloma; Pathology

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