Rash started on my back about a week ago, it began as a mild itch. Then it showed up on my stomach a couple days later. Started as just an itchy patch, it has now become a cluster of blisters surrounded by red. I only have this on my back and abdomen on my right side. It does not seem to spread, but it doesn't seem to be going away either. I thought maybe it was a severe reaction to a food allergy(history of fruit/veggie allergies), since its start seemed to coincide with a couple canker sores. But the canker sores have now gone away, but the rash is still present. Any ideas? Attached is a picture, I hope it shows up. Thanks!