i have been suffering from this from 2 years. i met an ENT specialist. he said that i am suffering from sinusitis and had a deviated nasal septum. he prescribed a spray-fluticasone furote aqueous spray which i have been using. when i spray it in my right nostril then it wont itch but when i spray it in my left nostril then it causes a itching sensation and it makes me sneeze and raises my asthma[which i have been suffering from childhood]. the symptoms wont decrease on using the spray.