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A member asked:
I get severe headache when i smell red onions. is this an allergic reaction?
8 doctors weighed in across 2 answers
No: This is an irritant reaction but does not represent an actual food allergy. Food allergy reactions are more likely to present with a combination of the following: rash or hives (the most common symptoms), swelling of lips, tongue, or throat, respiratory symptoms, vomiting, or diarrhea.
Answered 1/26/2015
6.3k views
Maybe but: It may also be an intolerance. Either way the only treatment is avoidance. Sometimes cooking a food lessens such a reaction.
Answered 11/23/2016
6k views
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