Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. Yes, it can be dairy food allergy. Some people can t tolerate the dairy food, they are allergic to the dairy food. I advice not to take the dairy food, as it can cause further allergy. You can take the cetrizine and prednisolone tablet for allergy under your doctors guidance. Please maintain good hygiene in oral cavity and nasal cavity it will prevent the future secondary infection superimposed to the allergy. The treatment of the allergy is the avoid the allergen, so if you avoid allergen your are away from the allergy. There is no better treatment than it. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.