Keratosis lichenoides chronica (KLC) is a rare chronic disorder of keratinization, characterized by the progressive development of erythematosquamous plaques and violaceous lichenoid hyperkeratotic papules, nodules and ridges. These lesions are most commonly found in a symmetrical distribution on the trunk and extremities and display a unique linear and/or reticulate pattern. The etiology of KLC remains unknown and the eruptions tend to be refractory to treatment. We describe a case of keratosis lichenoides chronica that improved with systemic retinoids.
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