I have awful tree pollen allergy. Somebody on the TV said last week that ash trees are the worst culprits, and yes our garden has ash trees all around in the fields that surround us, so that is probably correct then. I've learned to live with it now. My eyes itch like mad and it feels like somebody is running a feather down my nose, and a bit short of breath. No sneezing and snotting - thank goodness! What does puzzle me though, is why is it much worse in the evenings?
I take an anti-histamine, horseshoes, and my eyes are streaming now. When it's warm the pollen rises, I guess it starts to settle as the air cools. My doc prescribed allergenic eye drops, that helps quite a lot.
Horsheshoes........what a good question and I wish I could give you a good answer......but I can't ;-)
I can only assume that with pollen allergies one is busy during the day and tolerates the symptoms, but at night, when you are resting, they seem more noticeable.