The four epidermal tissue reaction patterns
Spongiotic
Psoriasiform
Interface
Vesiculobullous
Eosinophilic spongiotic dermatitis differential acronym
HAPPIED Herpes Gesationis Allergic contact derm/ Arthropod Pemphigus Pemphigoid (urticarial bullous pemphigoid) Incontinentia pigmenti Erythema toxicum neonatorum Drug