Bullous pemphigoid

Bullous pemphigoid (a type of pemphigoid) is an autoimmunepruriticskin disease that typically occurs in people aged over 60, that may involve the formation of blisters (bullae) in the space between the epidermal and dermalskin layers. It is classified as a type II hypersensitivity reaction, which involves the formation of anti-hemidesmosome antibodies, causing a loss of keratinocytes to basement membrane adhesion.