WOW, MX7 . . . that is GREAT news.
For several of my allergies, including mold, antihistimines help a lot with the symptoms; hives, runny nose, itching, itchy eyes, sneezing, throat swelling, breathing difficulties, etc. However, with fragrances, which cause a instant headache for me, antihistimines don't seem to help at all for that symptom.
My daughter was born with a ton of allergies, and they say most times the parents have allergies as well. Of course I tried to blame that on her dad

, because I was so out of touch with my body. I didn't even recognize the reactions I had to things (except fragrances and soaps ~ I always knew about those).
After developing sinus polyps, which caused constant sinus infections, I was told to test for allergies. I had lots

. Now that I am aware of the symptoms, I KNOW when my allergies are acting up, even if I don't always know what the exposure was that caused the reaction.
Hope this discovery helps your headaches!
Cherie
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I am not a Neurologist, Physician, Nurse, or Hairdresser ... but I have learned that it is not such a great idea to give oneself a haircut after three margaritas
.