Sequential treatments of Hailey-Hailey disease with photodynamic therapy, botulinum toxin type A and dapsone: A case report.

Hailey-Hailey disease is a rare autosomal dominant chronic recalcitrant blistering genodermatosis involving the intertriginous areas. Therapeutic options are various, depending on the type and size of the lesion, and include topical and systemic corticosteroids, topical and systemic retinoids, and DMARDs, but the only true curative approach is represented by the destruction of the affected areas through different techniques like carbon dioxide laser, photodynamic therapy, electron beam radiotherapy, botulinum toxin type A. We report a case of Hailey-Hailey disease successfully treated with a consequential regimen of PDT, botulinum toxin type A and dapsone.