<unk>  vulgaris is an autoimmune disorder that involves blistering and sores (erosions) of the skin and mucus membranes.
Pemphigus
Chronic idiopathic urticaria
Chronic cold urticaria
Bullous pemphigoid
Pityriasis lichenoides chronica
Toxic epidermal necrolysis
Factitious dermatitis
Pityriasis amiantacea