i am 33 years old, for the greater part of my life i have been troubling with uncontrollable sneezing. the slightest thing would triggor this; transition from cold to heat(environment) vice versa, too storng perfume, dust, and especially when i get up in the morning, and i raise my head i will begin to sneezing. i visited a doctor before and he recommended allegra, but to no avail. need help