Linear IgA bullous dermatosis: report of an exuberant clinical case and literature review

• Autor(a) principal: Pereira, Sandra
• Data de Publicação: 2019
• Outros Autores: Martins, Alexandra, Oliveira, Teresa, Monteiro, Virgínia
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://doi.org/10.25753/BirthGrowthMJ.v27.i4.13021
• topic: Case Reports

Introduction: Linear IgA dermatosis (LIGAD) is a rare acquired disease, with a probable autoimmune origin. Its differential diagnosis involves other bullous dermatosis. Case Report: A previously healthy 12-month-old male was observed at the Emergency Department due to a 4-day itchy vesiculobullous rash in the perineal region, lower abdomen, hands, and feet. Analytical study was normal. Flucloxacillin and hydroxyzine were initiated without improvement. New (some of which confluent) lesions, erosions, and serohematic crusts developed on the periphery of previous lesions. A skin biopsy was performed at this time, revealing a subepidermal blister with neutrophilic infiltrate at histological examination. Direct immunofluorescence uncovered linear IgA deposits along the basement membrane. Lesion remission occurred without further therapeutic measures. Discussion: Although clinically exuberant, LIGAD is usually a self-limited disease. A high degree of suspicion is important, since immunofluorescence is diagnostic and pathognomonic, avoiding late diagnosis, unnecessary treatments, and parental anxiety.