Please avoid non vegetarian foods and eggs.

Symptoms are suggestive of allergy to some substance...avoid dust,pollen...Consult nearest allergy clinic for skin prick test and other modalities of investigations in which they will test you for various allergens and find out to what you are allergic...and they treat you with diluted doses of that allergen to desensitise your body to that allergen...good luck

As condition is since childhood, its allergy only nothing to worry about. Try to observe what's causing this like cold temperature, some smell, some dust in the environment etc., if can't find identifiable cause, then consult an ENT surgeon to ascertain the condition of the sinus, if necessary you may have to get an antral wash done by him. Get the allergy test also done by him. If nothing is found out in the test and if it's not bothering her much then leave it as it's harmless. If its bothering her then give her some antihistamincs under medical supervision. For further guidance come back to us