People don’t have an “allergy” to gluten, they either have an intolerance or Celiac disease. So your allergist is the wrong person to ask. Try to get referred to a dermatologist.
If you look up dermatitis herpetiformis, it doesn’t look like this. I don’t usually get it, so this may be one of the expressions. But beware of taking advice from this sub. Please go to your dermatologist and get a professional opinion, you may need to get a referral from your primary care doctor.
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