AUTHOR=Didona Dario , Sequeira Santos Antonio Manuel , Cunha Tomas , Hinterseher Julia , Kussini Jacqueline , Hertl Michael TITLE=Case report: Detection of anti-bullous pemphigoid antigen 180 antibodies in a patient with Behçet’s disease JOURNAL=Frontiers in Medicine VOLUME=Volume 9 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2022.1001120 DOI=10.3389/fmed.2022.1001120 ISSN=2296-858X ABSTRACT=Behçet’s disease (BD) is a systemic inflammatory disease of unknown etiology. BD is characterized by relapsing oral and genital ulcers, several different cutaneous lesions, relapsing bilateral uveitis, and other several manifestations, including vascular, gastrointestinal, neurological involvement. Serologically, BD is not characterized by disease-specific autoantibodies. Indeed, usually only laboratory markers of inflammation, such as C-reactive protein may be elevated in association with increased disease activity. Bullous pemphigoid (BP) is an autoimmune disease characterized by tense blisters and erosions, which can involve the oral mucosa in up to 20% of patients. Characteristically, BP patients shows serum IgG autoantibodies against BP180 and/or BP230. Tissue-bound autoantibodies can be visualized as a linear IgG and/or C3 staining along the basement membrane by direct immunofluorescence microscopy. Here, we firstly described a young patient with BD, who showed IgG autoantibodies against BP180 without developing blisters or urticarial-like plaques.