I have severe sneezing problem, few years back it occours at few weeks interval now it is almost every day. every morning i get up with sneezing, even during sleep in night my nose start flowing...and i start sneezing. During winter i have to fully covered my head and face...still it occurs...no relief. Once sneezing starts the other symptoms like headache, watery eyes, itching in nose follows too. Steam give some relief but not much. please advice. i am not allergic to anything but it feels like whenever there is slightly increase or decrease in temprature sneezing starts.