A chronic diabetic patient aged 48 years female developed pruritic vesiculo bullous rash over extremities & trunk.Frequent changes of oral antidiabetic drugs are made due to uncontrolled Diabetes.@ *History* For last 20 days itching & bullae started *Physical Examination* Bullae are on erythematous base & tense. *Investigations* WBC & EOSINOPHYLS RAISED SERUM IgE markedly raised *Diagnosis* Diagnosis & manageent open for discussion