The "dilapidated brick wall" appearance is classically seen in the histopathology of the following?
Hailey Hailey disease/familial benign chronic pemphigus has full thickness paial acantholysis resulting in this appearance. Ref: Rook Textbook of Dermatology, 8th Edition, Page 39.33.
Hailey Hailey disease
Pemphigus vulgaris
Darier's disease
Bullous pemphigoid