I am allergic to all most every chemical known to man. I have had 2 epidural injections in my neck and each time, I have a clogged feeling in my ears. My ear canal always itch, as well. I know I am allergic to steroids, but the research I found suggests while I might be allergic topically, this does not mean I am allergic to something ingested or in my case, inserted. Is this true?