Thanks, Natalie. I found a copy of the letter I referred to in my last post (Letters to the Editor, Annals of Allergy, 56:June, 1986, p. 507). I'll note a few sentences that gave me hope years ago. Dr. Rapp stated, "I have seen approximately 30 youngsters in my office who have some aspects of the allergic-tension-fatigue-syndrome, as well as innumerable characteristics typical of the Tourette's syndrome. I am impressed that these patients' symptoms can be triggered by foods, inhalants, molds, or pollens. The symptoms frequently appear to respond to therapy, ie, allergy extract treatment and/or avoidance. There are some others who know when the children need to be retested because they begin to bark, or have a recurrence of their Tourette's associated with their allergy symptoms. I have a movie of one youngster whose symptoms can be precipitated at will by skin-testing with a number of stock allergins."
You can see why I was so excited to find the letter! I'm sorry, I don't really remember how I found the doctor that did the provocative skin-testing. The allergist is now deceased. I do remember that I heard of several doctors who did this testing and just chose the one that was nearest, which was a three hour drive.
I typed "Dr. Doris Rapp" in Google this afternoon and noticed that she has a Web Site. There may be something of interest to you there.
Hope this helps. Blessings, Sue