Hi tkstar. "herpes-like" blisters on the bottucks....try googling "Dermatitis Herpetiformis". Look for pictures. Google "rashes"...Click on Dermatitis Herpetiformis. This is a rash that comes with being Gluten sensitive. Not necessarily Celiac. Nothing to do with a STD. The body makes antibodies against the gluten, erupting (oddly) in the skin..."herpetiformis" means "formed like herpes" BUT IT IS NOT herpes. It is not common. But it is a pain for many. It can get much better and no symptoms. TRIGGERED by gluten...but also STRESS!
-N.W. from Atlanta