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Food Allergy and Diarrhea
For a mild food allergy, would the diarrhea associated occur within an hour or two of ingestion, or would it occur the following day? How long after ingesting food does the diarrhea usually occur?
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1809109 tn?1331807377
It really depends on the person and how sensitive they are. I'm lactose intolerant and I usually know an hour after I have something if someone put so much as butter on it. If someone mixes up my coffee I know in 10 minutes because the bloating gets so bad.

I'd also imagine food allergies don't act that much differently from other allergies- I'm allergic to fragrance but it could take a couple hours or days for me to experience symptoms. I'm also extremely allergic to lavender- it would take minutes for my skin to swell up and less than 2 hours for me to get hives.

So it would really depend on two things: how allergic that person is to a specific thing and how much of the allergen is ingested. Also not all allergies and intolerance shows up with diarrhea- you could also get bloating, rashes, swelling, nausea, headaches, etc.

If you think you're experiencing an allergic reaction to something, don't have it again (if you know what it is). You can also talk to the dr who can help you find out what you may be allergic to and depending on the amount of reaction- how much you are allergic to it.
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363281 tn?1353103243
Hello~It usually occurs about an hour or so later, but, it can occur sooner, or it can occur much later, I really think it all depends on the individual and what was eaten.
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363281 tn?1353103243
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Hello and hope you are doing well.

You could be sensitive to the quantity too. Some people develop symptoms based on the amount of allergen ingested.

Hope this helped and do keep us posted.
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