diabetic bulla diabetic bulla a diabetic bulla is a cutaneous condition characterized by a noninflammatory, spontaneous, painless blister, often in acral locations (peripheral body parts, such as feet, toes, hands, fingers, ears or nose), seen in diabetic patients.: 681 : 467–8 diabetic bullaother namesbullosis diabeticorum and bullous eruption of diabetes mellitusspecialtydermatology