The commonest good Allergan are peanuts, or any kind of nuts, coloured foods(mostly Chinese food), eggs, dals brinjals and tomatoes.
Next Steps
It is advisable to check for the food eaten 24 hrs before the rash has appeared to know the content you are allergic
Health Tips
Stop all suspected food, take anti allergic tablet for 1 week and slowly introduce 1 food at a time from the above list.