Why do IPAs make me sick so easily?

I’ve had IPAs three times– the first time I drank the whole thing and threw up that night. A week later I took 2-3 sips and stopped because I could feel it coming on again. Then I stayed away just to be safe– over a year later I take a sip of a friend’s by accident before realizing what it was and I was nauseated the entire night. No other beers or hard liquor hit me like that, and I can usually hold my alcohol just fine. Just curious.