I’ve had histamine intolerance since I was 14. What started as symptoms nobody believed turned into a week in hospital at 15, after a severe allergic reaction — and four months of tests before I finally got a diagnosis. Since then, the list of foods that trigger me keeps growing, and even the smaller reactions — a stomach ache, a migraine — can take half a day out of my life. The hardest part was never the diagnosis. It was the uncertainty. Histamine intolerance doesn’t work like a standard allergy — everyone reacts to different foods, in different amounts, in different combinations. So I’m building the tool I wish existed: one that learns my patterns specifically, and tells me ahead of time, not after.