Hello, I understand your concern. I am Dr. Arun Tank, infectious diseases specialist, answering your query. There is no permenant cure for the allergic pharyngitis. Except if you can find out the allergen and you can limit the exposure to such a substance. Only permenant cure for allergy is its prevention.You can take the cetrizine and low dose steroids under your doctors guidance as and when required. But this drug should be taken under your doctors guidance. You can use mask, helmet etc to prevent the exposure. I will be happy to answer your further concern, you can ask me on bit.ly/DrArun. Thank you. Dr Arun Tank Infectious diseases specialist.