My 13 yearold can noteat most foods with reaction itchy mouth, bumps that sometimes bleed, tightness , hard to swollow test says no reaction to food?

Allergens not known?: Itchy mouth, is a common symptom of allergic or irritant reaction to a food allergen. Bumps that bleed is not a frequent sign of an allergy; rather, it is due to viruses causing blisters (herpes of mouth). This can make it hard to swallow tightness could be real or perceived because of the fear of a reaction. It appears more likely that food is acting as an irritant (rather than an allergen).