My child with allergic conjunctivitis is on an antihistamine called Zyrtec daily because when he gets ulcerations on his eyes they then need steriod treatment which has lots of side effects. So the antihistamine is the lesser of the two evils.
He is affected by a plant called Singapore Daisy and also by lawn mowing.
When his allergies are particularly bad we also notice that if he eats anything thats related to grass for example wheat or barley it increases the severity of the reaction. So we now have him on a gluten free diet. (gluten being wheat, barley etc).
His other siblings are also on a gluten free diet. The youngest I suspect to be fair dinkum celiac and the autistic boy has been gluten free since he was nearly 4 yrs old because it affects his behaviour and guts even though he's not celiac.
The youngest carries an epi-pen because he is severely allergic to peanuts. So no sleep overs for him.
Apparently there is a trial going on in Melbourne to do with peanut allergies, I'm very optimistic that if he doesn't grow out of the allergy there will be a vaccine or something available before he's a teenager.
Hope that is a help
Cheers from Leanne