I originally posted the following on the thread begun by Garnet888; it may be relevant to your problem - if nothing else it might give you pause to consider a wider scenario:
I am now a crinkly who has had similar allergy/intolerance issues for more than 50 years. My allergy history may be of interest ...
Around pubity I started to suffer with 'hayfever' - that is unpleasant reactions to pollen, especially from grasses - which made me repeatedly sneeeze hard (until my nose would bleed), made me wheezy and caused me sweat (fever). Year on year this became worse and extended beyond the main pollen season. By mid teens I stayed indoors for much of the summers - sometimes staying in bed beacuse the symptoms were so debilitating. Being somewhat distracted I messed up academic exams.
Before 'A' levels I sought help from the NHS who tried somewhat crudely to test me for allegens. Mostly the test allergen spots put onto my skin caused large wheals that all blended together. No progress was made. Life continued its downward slide!
Getting to and through College was a trauma. By this time I learnt to love alcohol and the deterioration spiralled. Allergic rhinitis/sinusitis became common place .... you'll be getting the picture?
In work I had a colleague with similar problems and no positive outcome from NHS treatments who pestered me for possibly two years to visit a particular homeopath ( not a quack but a 'proper' doctor doing medical research) based in Southampton but also who practiced at Harley Street - which, at the time, was easily accessible to me. Eventually, very sceptical, I attended the London clinic. It was the best thing I ever did for my general well being!!
Afer a lot of discussion, a strange and slightly primitive looking electrical aparatus was physically connected to me and comparison made with dozens of material sample slides that were slotted into the machine. Within half an hour the doctor had identified a number of common foodstuffs to which I AM intolerant or allergic. I left with strict diatary exclusion orders that I stuck with for about two months before returning for another consultation. By this time life had taken a very different turn - no headaches, the sinuses were clear, my breathing was so good I could run again, my skin was clear; my mood was very much more bouyant. I was almost a new person!
FOR ME the primary exclusions were processed sugars and related dairy produce (lactose has similar effects and is a very common allergen) plus to a lesser effect coffee, chicken, corn ... and the list goes on.
I lived with my total exclusions for 35 years and enjoyed a very healthy life.
Following early retirement from a successful career I decided that I should be able to re-introduce and control alcohol and sweet puddings. To begin I allowed ten pints of beer in the first year. This gradualy slid to the point that I have been drinking two pints a week and regular puddings, still a relatively small amount, that has made some of the allergy symptoms return with a vengeance. I have sneezing fits, almost continual headaches, problems with my eyes. I recently frightened myself when, with pint in hand, I went into an almost hypnotic state and started insulting a good friend - totally lost it!
I am now back on my exclusions diet going through detoxification.
THE DOCTOR WHO SO IMPROVED MY LIFE ARGUED THAT MOST PEOPLE HAVE ALLERGIES OR INTOLERANCES. SOME PEOPLE ARE LESS TOLERANT OF ALLERGENS AND PEOPLE REACT DIFFERENTLY TO THE VARIOUS POSSIBLE ALLERGENS.
THE MAJORITY OF ALLERGENS TAKEN INTO THE BODY ARE PART OF FOOSTUFFS. iF THE FOODSTUFF ALLEGENS ARE ELIMINATED IT REDUCES THE LIKELYHOOD OF UNCONTROLLABLE ALLERGENS, SUCH AS THOSE IN THE AIR, CAUSING A SENSITIVE PERSON TO HAVE AN ADVERSE REACTION AND CONSEQUENT DETERIORATED HEALTH.
!!GET TESTED FOR FOOD ALLERGIES AND INTOLERANCES!!
Best wishes from an old but experienced fart.