I have had severe allergies for the past 40 years to food, outdoor/indoor and various medications. Every once in awhile I will get vertigo if I have a severe attack. Two weeks ago, the doctorin the ER prescribed Zyrtec. This was after I took Antivert to stop the vertigo. I tried Zyrtec for one week and while it dried up my nasal passages, I began to experience itching around my neck, ears and face. I stopped using Zyrtec yesterday and the itching has not gone away. I am determined to get this out of my system, but was wondering how long it will take. I have an appointment next week with an ENT doctor to discuss other options--do not want to take allergy medication that causes this type of reaction. I have used NasalCrom in the past and it always helped.