I have an allergic reaction to some foods as also iced water and drinks. Whenever, I take a swig of cold water or drink, though I feel comforted for the moment, at night the nasal passage closes up and as advised I take levocet d or monlevo depending on severity. I was also prescribed flutifl, steam inhalations etc by doctor who said nasal sprays off the shelf are addictive. I have severe nasal blockage and wish to know if there is permanent cure to have smooth breathing and air circulation in lungs and / or if I have to only improve the physicals by yoga, inhalations exercise etc. As I have another problem that of osteo necrosis of left knee I cannot exercise much with out causing some pain and getting breathless on threadmill. Please advise. I am 62 yrs and wish to see either a chest specialist but for clearance of nasal passage or should I see an ent specialist. Please also advise if flutiflo having steroids is advisable. Thanks.