I'm glad I came across this article! I too have always been sensitive to dust and would sneeze with my eyes very itchi. But never had a problem with cats or other animals around until recently when visiting my friend in her new place where she lives with her cat. Once I enter her place my eyes get red, itchi and I can't stop sneezing. It's so uncomfortable.
And I wonder, can you actually be allergic only to one cat? Because with my other's friends cats I don't seem to have a problem...hehe