My mouth, lips, and throat get really itchy. Basically any pink part of my skin that touches the banana. So the inside of my cheeks, my gums, my tongue, the roof of my mouth... it's incredibly uncomfortable. It's not as bad as it could be, since I don't swell up or anything like that. But I've heard that those major, dangerous kinds of allergic reactions don't come out of nowhere - they're preceded by mild reactions. So I could have a really bad reaction someday, so I just avoid bananas to be safe.