Abstract
Keratosis lichenoides chronica represents a distinct entity, a rare disease of unknown etiology and pathogenesis, with clinical manifestations which, although typical, require extensive differential diagnosis. The course of the disease is chronic, progressive, and it is resistant to various treatment options, so despite variations in the clinical picture it is really easier to diagnose than to treat. This is a case report of a male patient in whom the diagnosis of keratosis lichenoides chronica was based on typical clinical picture, repeated biopsies and histopathological findings, course of the disease and poor response to any therapy.