Childhood lichen planus pemphigoides: a case report and review of the literature

Daniela M Cohen, Dan Ben-Amitai, Meora Feinmesser, Alex Zvulunov
Pediatric Dermatology 2009, 26 (5): 569-74
Lichen planus pemphigoides is a rare autoimmune blistering disease that is characterized by evolution of vesico-bullous skin lesions in patients with active lichen planus. We describe a case of lichen planus pemphigoides in a 6-year-old boy and review the clinical and immunopathologic features of all reported cases of pediatric lichen planus pemphigoides. The mean age at onset of childhood lichen planus pemphigoides is 12 years with a male to female ratio of 3:1 and a mean lag-time between lichen planus and the development of lichen planus pemphigoides of 7.9 weeks. Vesiculo-bullous lesions were found on the extremities in all patients and there was palmoplantar involvement in about half of the cases. Direct and indirect immunofluorescence features were similar to those reported in adults. One patient had Western immunoblot data revealing antigens of 180, 230, and 200 kDa. Immunoelectron microscopy in two cases showed localization of immune deposition different from that in bullous pemphigoid. We found that topical corticosteroids or oral dapsone caused resolution of lichen planus pemphigoides without known relapse of blistering in four cases, suggesting that it might be possible to reserve oral corticosteroids as a second line of therapy in children with lichen planus pemphigoides.

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