Repeated raised rash on the skin after a certain kind of food suggests that there is some kind of allergen that can t be resisted by individual s immune system. It could be urticaria too. Still want to give the same food? Chances are rashes may double next time or even more next to that. Wisdom is to avoid it. But before quitting that food you should ensure that same food is culprit. Anti allergics in modern toxic medicine relieves fast but doesn t cure nor does it create immunity. Alternatively Ayurveda has the answer. If you can give pure turmeric powder + Neem leaves + Sugarcandy powder (if not diabetic) in 1:1:1 ratio and give the mixture 1/4 tsp every eight hrs. mixed in honey (again if not diabetic) for a week to two weeks, you will start seeing lesser or no rashes appearing. But the effect comes slowly being natural things. Here sugar candy and honey have different properties. Together these things act as Sheet Pittnaashak as per Ayurveda principles. Beauty of the combo is you may mix any two or all three ingredients. If nothing is available, at least your kitchen will have turmeric of best quality. If honey is not to be given , for diabetes, water may be given but for small child its difficult. In ready made classics of Ayurveda, HARIDRA KHAND is medicine of choice in place of above combo. It s a coarse powder. Give 1/2 tsp TDS if you can get from India or online. I do not find better thing which is natural, harmless, safe, no side effects for such issues. But little slow. Hope it helps your child and it will. In case any further information is needed, pl write direct question.