I have had these unusual blisters appear on different bum cheeks and start as a red rash and within a day or two develop into a patch of small clear fluid blisters. They burst on their own and scab over. My G.P has suggested it could be a localised skin infection or cellulitis and I have tried both antibiotic and steroid cream when active but they don't have much effect. Any advice would be much appreciated 💓