Your mouth malfunctions.
An allergy can also cause you to have an itchy mouth or “slight, dry cough,” says Baker. This usually happens with fruits or vegetables, which have proteins similar to pollens.
According to FARE, the itching is usually limited to your mouth and goes away a few minutes after you've swallowed the offending food.
If you're having difficulty swallowing a meal or have a tight feeling in your chest, you could be experiencing eosinophilic esophagitis.
Put simply, food allergens can trigger an immune response that sends massive numbers of white blood cells (called eosinophilis) to your esophagus, which causes it to get inflamed, making your throat feel tight or like food is getting stuck in your windpipe.
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