Welcome aboard cdbeukel.
Allergies stem from adrenal gland dysfunction. When we are exposed to an allergen the adrenals respond by releasing epinephrine and corticosteroids to counter allergic responses. The epinephrine counters histamine and leukotrienes, while the corticosteroids are immune modulators and anti-inflammatory. Allergic responses, including asthma, are treated with epinephrine and possibly steroids. Both of these substances are produced by the adrenal glands.
The adrenal glands use more vitamin C than any other part of the body. So this would be the first thing to focus on. The next most important thing is pantothenic acid. This can be found in a B complex vitamin supplement. The best natural source for pantothenic acid is bee pollen. Some people may be allergic to bee pollen though. I think the a B-50 complex is good. Anything over 50 is a waste. Makes pretty bright yellow pee though.
Herbs that support the adrenal glands include schisandra berry, astragalus, nettle leaf, Siberian ginseng, suma, ashwagandha, Arctic root, and small doses of licorice root. Some of these have adaptogenic qualities; and that is why the support the adrenals.
Most all herbs are best on an empty stomach. Fats and proteins can block absorption.
Good luck with this. Allergies come and go. I think the best thing to do is support the glands that improve your immune system.
If there is a link with allergies and OCD, I think it would be the adrenal glands.
"A good listener is not only popular everywhere, but after a while he gets to know something." �Wilson Mizner