Seborrheic pemphigoid

BP: bullous pemphigoid SP: seborrheic pemphigoid INTRODUCTION Bullous pemphigoid (BP) is the most common autoimmune subepidermal vesiculobullous disease usually affecting older patients. In BP, there is no ethnic or racial predilection and it affects both men and women equally. Based on the reported data in the Philippine Dermatological Society Health Information System, the incidence of BP for 2014 is 0.0009 per 100,000, which is low compared with the 0.2 to 3 per 100,000 in developed countries such as the United Kingdom. Precipitating factors include intake of drugs such as furosemide, phenacetin, enalapril, and ibuprofen; radiation therapy; ultraviolet A and B exposure; burns; surgery; and organ transplantation. BP is typically characterized by mild to intractable pruritic macules, patches, and plaques (urticarial stage) eventually evolving into tense serous or hemorrhagic vesicles and bullae with excoriations and erosions (bullous stage) typically seen on flexural areas, lower abdomen, and lower extremities. Nikolsky and Asboe-Hansen signs are usually negative. In some cases, BP presents clinically as atypical variants including dyshidrosiform and intertrigolike, prurigo nodulariselike, eczematous, localized, and erythrodermic forms. In addition to these atypical presentations, BP may be seen on seborrheic areas (scalp, preand postauricular, auricular, chest) and is referred to as seborrheic pemphigoid, which has very few reported cases. Here, we report a case of seborrheic pemphigoid in a 67-year-old Filipino man.