There isn't sufficient information to come to a specific diagnosis. I would advise you to visit a dermatologist so as to have it evaluated and treated accordingly. You may require antihistamines, antibiiotics(if indicated), antacids and a topical cream. Kindly don't scratch the lesions and apply calamine lotion over the lesion to get some relief.

Dear patient Your given history is inconclusive so some more information related to your problem are required for better advice As blind treatment may not get desired results or may worsen the conditions