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Overview Hailey-Hailey disease (HHD), also called benign familial pemphigus, is an autosomal-dominant disorder characterized by a defect in keratinocyte adhesion. HHD most frequently involves intertriginous areas, where exacerbations are triggered by heat, sweating, friction, and/or secondary infections. Lesions also affect the chest and back, but these lesions tend to be easier to control. Hence, the […]