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Keratosis lichenoides chronica: report of a case developing after erythroderma
P R Criado1, N Y Valente, J A Sittart
1Unit of Dermatology, Hospital do Servidor Publico Estadual de Sao Paulo, Brazil. prcriado@uol.com.br
Abstract:
A 66-year-old male presented with keratosis lichenoides chronica after a presumed drug-induced erythroderma. After resolution of the erythroderma, slightly scaly erythematous and violaceous papules in a reticular arrangement over the trunk and limbs developed in association with hoarseness, palmoplantar keratoderma, onycholysis and subungual keratosis. Histology from a lichenoid lesion showed pseudo-epitheliomatous hyperplasia, hyperorthokeratosis, parakeratosis, dyskeratosis, neutrophil exocytosis and focal vacuolar degeneration of the basal layer of the epidermis. There was a band-like chronic inflammatory infiltrate in the upper dermis. The skin improved with prednisone 40 mg/day for 15 days, leaving atrophic hypopigmented scars. A diagnosis of keratosis lichenoides chronica was made.
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