Hi, I Have Been Suffring From Sneezing Problem Whenever The

hi, i have been suffring from sneezing problem whenever the temprature changes i start sneezing. i have been suffering with this from past 4 years. i was recommended by doctor to have telecast-l medecine. but now this is not much effect but seems like it is giving me now some side effects like gestoration, lazyness, ! kindly help me what i can do with my sneezing problem.