I feel for you - one of the great things about getting a bit older is that these things subside, although not completley. I now find Clartyn (or the Boots branded version), work about the best although not completely. My CAA doctor did tell me that Claratyn & grapefruit Juice do not mix well (some side effect, I can't remember what but he did send me a write up from a medical journal which I have filed somewhere).
This year has been particularly bad - my wife in eal dsitress from it for most of the last 4 weeks.
One thing, I always found that when I got near an aircraft, the symptoms just evaporated (adrenalin??)