food allergy symptoms include skin gastrointestinal and respiratory symptoms. skin symptoms include hives or an itchy red rash; respiratory symptoms include coughing wheezing and laryngoedema (a swollen throat); and the gastrointestinal symptoms include significant vomiting intestinal pain and diarrhea. these symptoms are always temporally related to ingestion -- that means very close in time. often it's seconds to minutes after ingestion but always within hours. if you drink milk today and have symptoms tomorrow it's not related.
what are the symptoms of a food allergy?