Pemphigus describes a group of autoimmune disorders in which there is blistering of the skin and/or mucosal surfaces. The term used to include most bullous eruptions but improved diagnostic tests have allowed a reclassification of bullous diseases. The bullae are superficial and confined to the epidermal layer. This is in contrast to bullous pemphigoid where bullae are subepidermal.
This is a companion discussion topic for the original article at https://patient.info/doctor/dermatology/pemphigus