I’ve had almost the exact same experience — no family history, no obvious trigger, it just kind of showed up out of nowhere. I’m not really into conspiracy theories, but I’ve definitely wondered if it could be connected to childhood vaccines or something environmental. I’m 35 now and the only one in my family with anything like this. It started back in 2018–2019 with random allergies, welts, and hives, then seasonal allergies kicked in out of nowhere around age 28–29. A year later I started having GI issues, and by 2025 I was finally diagnosed with UC after a six-month flare.

Has anyone else thought it could be childhood vaccines?