For some people, an allergic reaction to a particular food may be uncomfortable but not severe. For other people, an allergic food reaction can be frightening and even life-threatening. Food allergy symptoms usually develop within a few minutes to 2 hours after eating the offending food. Rarely, symptoms may be delayed for several hours. The most common food allergy signs and symptoms include:  Tingling or itching in the mouth Hives, itching or eczema Swelling of the lips, face, tongue and throat or other parts of the body Wheezing, nasal congestion or trouble breathing Abdominal pain, diarrhea, nausea or vomiting Dizziness, lightheadedness or fainting  Anaphylaxis In some people, a food allergy can trigger a severe allergic reaction called anaphylaxis. This can cause life-threatening signs and symptoms, including:  Constriction and tightening of the airways A swollen throat or the sensation of a lump in your throat that makes it difficult to breathe Shock with a severe drop in blood pressure Rapid pulse Dizziness, lightheadedness or loss of consciousness  Emergency treatment is critical for anaphylaxis. Untreated, anaphylaxis can cause a coma or even death.
people  allergic reaction food may uncomfortable severe  people  allergic food reaction can frightening life-threatening  food allergy symptoms develop minutes 2 hours eating offending food  rarely  symptoms may delayed hours  common food allergy signs symptoms include:  tingling itching mouth hives  itching eczema swelling lips  face  tongue throat parts body wheezing  nasal congestion trouble breathing abdominal pain  diarrhea  nausea vomiting dizziness  lightheadedness fainting  anaphylaxis people  food allergy can trigger severe allergic reaction called anaphylaxis  can cause life-threatening signs symptoms  including:  constriction tightening airways swollen throat sensation lump throat makes difficult breathe shock severe drop blood pressure rapid pulse dizziness  lightheadedness loss consciousness  emergency treatment critical anaphylaxis  untreated  anaphylaxis can cause coma death
food allergy