text: i am allergic to cats adn am wondering if there is anything i can do to stop this problem? my sister has 3 cats and i always avoid going to her house because of that. she always invites me over and then when i do go i start sneezing and and i cant breath right. i hate it. :( the only thing that helps is antihistamines.  take a non-drowsy benadryl, or a generic version, an hour or two before you head over there.  best of luck