Are you sensitive to gluten? There are many symptoms of a gluten intolerance. You may experience swelling, itching, or any kind of irritation within your mouth. Hives, nasal congestion, watery eyes, trouble breathing, cramps, and diarrhea are also known symptoms. If you have dealt with these issues after consuming gluten, then you may be one of the many people suffering from a wheat allergy. Luckily, there’s help.