When a person has a severe allergic reaction to something this is called anaphylaxis; they will have trouble breathing, hives, swollen eyes or lips, severe itchiness, and abdominal pain or diarrhea. If any of these symptoms occur call emergency medical services immediately. If you know that you have an allergy that causes severe allergic reactions talk to you doctor about carrying an epinephrine injector, commonly known as an EpiPen.
Food allergies are one of the biggest areas to be concerned about especially around small children. The food that we eat are in the closet contact with our airways and can very easily effect the breathing of the person who is suffering from the allergic reaction. Those people with food allergies must be on constant alert and learn how to read ingredient lists well in order to avoid an allergic reaction. If you believe that there could be a time where you are unable to speak for yourself because of an allergic reaction, then start to wear a medical bracelet or necklace.