Keratosis lichenoides chronica: marked response to calcipotriol ointment

Keratosis lichenoides chronica (KCL) is a rare dermatosis characterized by a distinctive seborrheic dermatitis-like facial eruption, together with violaceous, papular, and nodular lesions on the extremities and trunk, typically arranged in a linear and reticulate pattern. KLC is resistant to therapy, although spontaneous remission has been reported. We describe a 35-year-old woman with KLC who had the typical features of widespread violaceous, reticulate, and striae-like eruptions with a prominent keratotic component over a nine-year period and who responded well to treatment with calcipotriol ointment. The immunohistochemical profiles are presented in addition to typical histopathologic features.