I get itching in my left side of the throat,and when the itching starts,tears come from the one eye on the same side(left).the cough is dry and it res?

Tearing: If your eye shows no sign of irritation or inflammation, the tearing appears to be a reflex reaction to the throat itch. Occasionally there may be associated sneezing or nose running. The latter may be caused by intolerance to things like temperature change or certain food or spice, excess dryness in the environment, early phase of throat infection or head cold, or allergy to certain substances.