I am allergic to dust, dust mites, moulds, tobacco smoke, maple pollen, birch pollen, cats, dogs, rabbits, guinea pigs (all cause asthma and stuffed up sinuses, itchy and swollen eyes etc.), some weeds, bananas, cantaloupe and who knows what else (allergy testing done a few years ago). Especially the mould allergy triggers tics (in humid weather I feel terrible, due to mould in the air). Mould also triggers migraines.
I am also intolerant (not the same as allergies) to several foods. The known ones (tested by a naturopath and confirmed by experience) are the whole nightshade family (potatoes, tomatoes, peppers, eggplant), lactose, coffee, chocolate, msg and the combination of fruit and grain (no blueberry muffins for me , or a glass of juice with a sandwich, or I break out in itchy hives all over, which last two days ). I can eat fruits and grains three hours apart from each other. Potatoes will cause gastrointestinal distress, and tomatoes and peppers will trigger terrible migraines as well as stomach and bowel problems.
I have not really paid much attention to whether any of the above trigger tics or make them worse.
German citizen, married to a Canadian for 28 years, four daughters, one son, eight grandchildren (and one on the way).