<unk>  sufferers may have any of a number of<unk> c reactions that usually occur very rapidly, within minutes of eating a trigger food. The most common reaction is an itching or burning sensation in the lips, mouth, ear canal, or pharynx. Sometimes other reactions can be triggered in the eyes, nose, and skin. Swelling of the lips, tongue, and uvula, and a sensation of tightness in the throat may be observed. If a sufferer swallows the food, and the<unk> n is not destroyed by the stomach acids, it is likely that there will be a reaction from histamine release later in the gastrointestinal tract. Vomiting, diarrhea, severe indigestion, or cramps may occur. Rarely,<unk>  may be severe and present as wheezing, vomiting, hives, low blood pressure, or anaphylaxis.
Oral allergy syndrome
Burning mouth syndrome
Dermatophagia
Neck-tongue syndrome
Drug-induced angioedema
Hereditary angioedema
Factitious airs
Mucus fishing syndrome