I've been having a runny nose for the last five years non stop.with white colored mucus ,it doesn't stop at all and i can feel mucus at my throat all the time . and those symptoms get worst in the winter .before this problem started i didn't have any kind of allergy. most of those consultation i was diagnosted as have an allergic rhinitis.i find out i have an allergy to pollen,dust, and wool , any way i was given antihistamin nazal sprays so many times but they didn't have any effect at all .