The return to outdoor activities and the increased length of days is typical of spring, but it also is a time for allergy-related respiratory illnesses. Spring allergy flare-ups are caused by trees and plants blooming, and pollen is carried by the wind and ends up in our noses, eyes, and lungs. While pollen allergies are not fatal; they are an annoyance and an interruption that never seems to end. Aside from pollen allergies, springtime brings ...