Just started for me too, while away in NY. Grr! Come back here and its streaming now. booo!!
Always find its not a problem at all when riding, think the adrenaline supresses the histamine for some reason. But 10mins after I stop riding, seems it all catches up and I really pay for it! Head just explodes, sandpaper eyes, nose streams.
As said above though, I count myself lucky too, many are much worse off.
Only tablets that work for me and not send me to sleep at desk are Benadryl (not one a day). Combine with drops and spray and usually not too bad, but still comes on. Oh, alcohol doesn't help either. bummer.