I second the recommendation for an antihistamine. Zyrtec is the one I've had the best luck with (I take it 365 days/year...I suspect I'm allergic to the same things that my mom has tested for--cats, dust mites, and mold...and we both live in old homes with cats). For the drainage stuff I find that Mucinex works well--not the cough suppressant, but the expectorant (guaifenesin, or something like that). It keeps stuff extra runny, instead of sticky and tickley.