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flabberghaster wrote

Isn't poison ivy one of those things where it doesn't do anything the first time or two and then you become allergic? Or is that poison oak?

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Dogmantra wrote

thanks nature spirits

thature spirits

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rain wrote

It’s the same allergen in both plants. Your body is reacting to the compound urushiol. It often doesn’t cause a reaction until you’ve been exposed a few times. A small handful may never react, but there’s no guarantee even if you haven’t reacted before.

What’s scary is urushiol is also found in trace amounts in some foods, including cashes and mangos. Sometimes a bad reaction to poison ivy can sensitize your body to urushiol to the point where you start reacting to the trace urushiol found in these foods.

tl;dr - poison ivy exposure can give you sudden food allergies, even if you have had no reaction in the past

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