Symptoms of food allergies may range from mild to acute. Once released, histamine is a very strong chemical that can optimize the lungs, skin, stomach and heart. In someone who has acute food allergies, histamine could be life threatening.

Histamine can be released in any part of the body. If it is released in the skin you may feel the sudden urge to scratch. Hives or rash may appear. Histamine can also be released in the stomach and intestines which can cause moderate to extreme pain, nausea, cramping and or diarrhea.

If the histamine is released in the ears, nose or throat, the first symptom is itchiness, especially in the ears and throat. A sudden onslaught of sneezing and runny nose after eating or the desire to clear your throat is a side effect of food allergies. Mouth sores may suddenly appear.

Histamine released in the throat can also develop into more serious symptoms including the inability to swallow, shortness of breath and or chest pain. Acute symptoms can cause airways to the lungs to tighten and more severely, anaphylaxis. You may experience a combination of these symptoms if you have severe food allergies.