title: Lichen planus pemphigoides: a clinicopathological study of nine cases.
abstract: Lichen planus pemphigoides is a rare condition characterized by blisters arising on normal or erythematous skin in a patient with concurrent lichen planus. It must be distinguished from bullous lichen planus, in which, as a consequence of severe basal cell hydropic degeneration, blisters arise within lichenoid papules or plaques. We present a clinicopathological study of nine cases of lichen planus pemphigoides, and report histological, immunofluorescent, ultrastructural and immuno-electronmicroscopical observations. We distinguish lichen planus pemphigoides from bullous lichen planus and consider the differential diagnosis. We propose that lichen planus pemphigoides does not represent a homogeneous condition: it may represent a number of bullous dermatoses that develop as a consequence of exposure of different basement membrane antigens following severe damage to the epidermal basement membrane as part of the lichenoid inflammatory process.
authors.affiliation: Department of Dermatology, St Thomas' Hospital, London, UK.
authors.forename: E
authors.initials: E
authors.lastname: Willsteed
authors.forename: B S
authors.initials: BS
authors.lastname: Bhogal
authors.forename: A K
authors.initials: AK
authors.lastname: Das
authors.forename: F
authors.initials: F
authors.lastname: Wojnarowska
authors.forename: M M
authors.initials: MM
authors.lastname: Black
authors.forename: P H
authors.initials: PH
authors.lastname: McKee
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D008010:Lichen Planus / Q000276:immunology / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D010392:Pemphigus / Q000276:immunology / Q000473:pathology*
chemical_list: D007074:Immunoglobulin G