Thanks everyone for the suggestions. Yes, I should have him see an allergist. He already has visited this year for re-test of food allergies, and I was not very happy with the Dr...so maybe I need to explore how to get my insurance to cover someone else.

Good to know what medications are popular, or unpopular, with people.

Neti pot or anything up the nose is an absolute no-go, as DS has only recently stopped plugging his nose when he goes underwater at swim class, after almost THREE years of continuous lessons! You should have heard the screaming when we tried to give him showers when he was younger.

We do have fairly high MERV (12) filters and a new HEPA filtered vaccuum; however, I definitely don't vaccuum as often as I'd like!