title: Lichen planus with late onset hypogammaglobulinaemia: a casual relationship?
abstract: A case of lichen planus of the mouth and vulva associated with late onset hypogammaglobulinaemia, alopecia areata and vitiligo is described, and the possible significance of a B cell defect in the pathogenesis of lichen planus is discussed.
mesh_terms: D000361:Agammaglobulinemia / Q000150:complications* / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D005260:Female; D006801:Humans; D008010:Lichen Planus / Q000209:etiology* / Q000276:immunology; D008875:Middle Aged