I woke up this morning wondering the same thing! The pollen has started here this week from the pine trees and I am itching like crazy and my eyes are swelling up. A the same time, my DDs chronic cough has flared up this week. It started last April, same time but then subsided towards the end of the summer. We assumed it was a tic, as tics are her main PANS symptoms. But now I'm wondering if allergies can cause flares even before any kind of infection is present? Also, does anyone know if allergy blood tests are accurate? She had one done last year and nothing showed up.