Hi.i have always had seasonal allergies since I was a kid and have been on antihistamines for 30 years. Recently I have been having facial flushing after eating. The allergist wants me to be tested to see if I have new allergies so I stopped my Zyrtec yesterday to do allergy testing in 5 days. Experiencing facial flushing, itchy nose, eyes and chills. It's making me nuts! How do people make it the whole 5 days? Anything I can do to help? Has this happened to others? Obviously if it gets worse I will take a Benadryl but I really want to try to stick it out. Thanks.