<prompt> 12 years old male presented with intensely itchy grouped vesicles on buttock, trunk and scalp. On exposure to wheat they exaggerate. Diagnosis is -Herpes simplexDermatitis herpetiformisPemphigus vulgarisBullous impetigo  <response>: Ans is b i.e. Dermatitis herpetiformis o Among given options only dermatitis herpetiformis is a gluten sensitivity disorder and aggravates on on eating gluten wheat, rye, barley.Other features in favour of diagnosis areo Intense itching characteristic featureo Distribution of lesion - buttock, trunk and scalpo Age group - DH is commonly seen in 2nd to 3rd decade.o Has been explained in previous sessions. 