Nasal steroids are not primarily decongestant. They have that effect to a certain extent, but the primary effect is blocking inflammation.
I have had good success treating many patients with chronic clearing difficulties using these agents. and in most cases they work very well. They aren't perfect (what is?) but they are nice for many people.
They usually start working within 48 to 72 hours and seem to act by inhibiting the allergic reaction that is the culprit behind much nasal congestion.
At least one study shows them improving results in sinus infection.
The decongestants just constrict blood vessels.
The corticosteroids block the tissue reaction to the irritating agent and decrease congestion that way.
Think of it in terms of applying cortisone cream to a rash. just as cortisone blocks the reaction within the skin that produces the swelling and the itch, the steroid sprays block a similar reaction in the nasal and pharyngeal tissues.
If you have a chronic clearing problem, or a dive trip coming up and a cold or sinus problem, discuss them with your doc before the ear trauma occurs.
Blow bubbles in the ocean, Not your ears.
John
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