Most docs only test for IgE (acute) allergies but they can be caused my IgM, IgA, IgD, IgG, or IgE Antibodies. If you get a check of IgG Chronic allergies you will find many that showed no IgE acute reaction to gluten, or dairy, etc do have IgG allergies to these foods. Life Extension Food Safe Allergy Test covers 95 foods for IgG allergies. If anyone knows a place that tests for IgG PLUS IgE or IgA then please let me know.
Do Allergens AFFECT Brain Function?
Dr Charles Parker (30+ years experience) has done SPECT imaging on the brains of those with ADHD. He has found "holes" of inactivity in the frontal lobe where impulse control is found. He is dealing with gut and immune issues and by reducing allergens is positively influencing the "diminished metabolism" found in the ADHD brains of many of his patients. Do you know what he is finding is the number one offender of immune problems that reduce nutrients getting to the brain? Wait for it.....DAIRY followed by wheat and eggs. By taking these three things out of the diet for 2 weeks many of his patient's, not all, symptoms improve and brain imaging is backing that up. So YEAH Allergens can affect brain health among other things.
BTW I have tested IgE positive for mushroom allergies but not dairy. Yet when I took D3 which decreased my dairy cravings and then reduced my milk consumption by 90% my sinus issues I have always had decreased by about 90% for the last FOUR years. So yeah I was having allergic/ food sensitivity that was not showing up on standard IgE testing.
Best wishes to all in working with a medical professional to reduce symptoms,