<prompt> Herpes gestatioinalis isCaused by Herpes virusAutoimmune reaction to collagen XVII in basement membrane of skinNeutrophilic degranulation at dermal - epidermal junctionLess severe in subsequent pregnancies.  <response>: Herpes gestationalis pemphigoid gestationis is characterized by eosinophilic degranulation at dermal-epidermal junction. Becomes severe with subsequent pregnancies. 