History: This patient who history of an sudden onset of tremendously pruritic urticarial papules and blisters on the abdomen, trunk and legs. The initial lesion was periumbilical. Then they spread suddenly to the trunk and back and some coalesced forming a sheet with blisters on top of it at the periphery. Now he is on treatment since a week on prednisolone 40 mg/ day, and local mild steriods locally, lesion around umblicus got dried, but there is some new blisters on both legs and dorsa, therefore prednisolone increased to 50 mg/ day today and we will see after than.