Histamine Intolerance

My problems started about 12 years ago with "just" vestibulitis and pain during intercourse. I hit the internet, and basically tried everything most people on here have tried at some point. Nothing really helped.
Early on I realized that some foods made what was always there to some degree worse. The first foods I took care to avoid were soy, wheat bran, and black tea, but still I did not get rid of the always present mild irritation, let alone sudden flare ups. Over time other seemingly random symptoms (burning, itching skin especially on my legs, occasional diarrhea, bladder pain) appeared. This went on until four years ago I read an article on food intolerance in a German online news magazine. Suddenly it all made sense, because I realized that the foods that were giving me the most trouble were all naturally high in histamine, which causes inflammation. The reason that even by avoiding those the irritation never went completely away was that many foods contain histamine to some degree, and histamine content increases as foods age. So one day you eat something without any consequences, while a day later all hell breaks loose. Very confusing. The causes for histamine intolerance are very complex, but basically it all comes down to how much histamine (and other biogenic amines) the body needs to metabolize and how much Diamine oxidase (DAO) it has to do so. DAO is the enzyme necessary neutralize histamine and the other biogenic amines. My body clearly does not make enough DAO, but in general histamine tolerance varies from person to person. Fish poisoning is caused by histamine, so at some point everybody folds.
Since I first figured things out for me things have greatly improved. I take medications (Singulair and Gastrochrom) to keep my body from releasing too much histamine in the first place. I take supplements (high doses of vitamin C, Alpha Lipoic Acid, Quercitin, P5P, Amylase, DAO) to support that. Hydra 7 to keep the mucous membranes moist. And I am on a strict histamine avoidance diet, which is often difficult and frustrating, but only until I consider the alternative.

I realize that the causes for vulvodynia/vestibulitis are many, but also hope that I can help point somebody in the right direction for them. It took me eight long years to figure this out. My gynecologist was supportive, but at a loss. The specialist she sent me to (Dr. Soper at MUSC in Charleston SC) wanted to operate, which might help some, but in my case would not have made any sense. The allergy doctor never even mentioned the possibility, but technically it`s not an allergy. I still think he should have known.

I'm glad you're beginning to solve your mystery! Could you tell me some foods that contain histamine etc? Would be interested to see if this could flare me up too.