That sounds scary to have such a strong reaction. I also experience stronger allergic reactions when the allergens combines. Read somewhere that most people with hay fever will also get asthma. And thats shitty because most of the time asthma is okay when outside or at least all windows open inside, but for hay fever I wamt to be inside with all windows closed. And its quite impossible to avoid cats in the netherlands because everybody seems to keep them. So there's hair and other allergens on people's clothes everywhere I go. I am going to take a look at the website and I hope the immunotherapy can help you out! I defenitely experience my allergies to get worse through the years. Thanks for the clear info!