Thanks for query,
It seems that you are having allergic rhinitis
.it remains there till allegen caused is not eliminated.
Use local decongestant nasal drops and decongestant tab.
Take nasal inhalation with vicks
Take anti histaminic like cetrizine
Avoid pollen bodies and smoky and cold
Avoid fried,cold drinks,icecreams and junk food.
Ok and bye.