<prompt> The dilapidated brick wall appearance is classically seen in the histopathology of the following?Hailey Hailey diseasePemphigus vulgarisDariers diseaseBullous pemphigoid  <response>: Hailey Hailey diseasefamilial benign chronic pemphigus has full thickness paial acantholysis resulting in this appearance. Ref: Rook Textbook of Dermatology, 8th Edition, Page 39.33. 