title: Keratosis lichenoides chronica mimicking verrucous secondary syphilis.
abstract: Keratosis lichenoides chronica is a rare dermatosis of unknown etiology with a wide variety of cutaneous manifestations. We present a 47-year-old male with a history of progressive and recalcitrant hyperkeratotic and warty plaques, mimicking verrucous secondary syphilis both clinically and microscopically. We review the clinical manifestations, microscopic features, and treatment modalities for this rare and distinctive dermatosis.
authors.affiliation: Department of Dermatology, Brown Medical School, Providence, Rhode Island.
authors.forename: Anu G
authors.initials: AG
authors.lastname: Jayaraman
authors.forename: David
authors.initials: D
authors.lastname: Pomerantz
authors.forename: Leslie
authors.initials: L
authors.lastname: Robinson-Bostom
mesh_terms: D001707:Biopsy, Needle; D002908:Chronic Disease; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D007642:Keratosis / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D017512:Lichenoid Eruptions / Q000150:complications / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D012720:Severity of Illness Index; D013591:Syphilis, Cutaneous / Q000175:diagnosis / Q000473:pathology*