Dear sir, i am suffering from dry cough  since 5 years..and i had consulted so many doctors yet but it doesnt work...and from one year i had not cosulted any doctors because i am tired of showing now, some of the doctors said that its due to allergy of dust particles which is in the air..but i dont think so..they suggested me to keep some distance from the dust..and always wear a mask when you would have to go outside..but i cant do this everytime.. now from few years i have a new problem of throat rashing and traping also..due to this throat rash i am very worried ..i have to face so many problems..and i want to say you that this throat problem bothered me more than my cough problem.. So please assist me a good solution for this..for this i would be very grateful to you..