Final answer:
A common allergy for young children is oats. Food allergies occur when the immune system reacts to substances in food as though they were harmful 'foreign invaders.' Symptoms of food allergies often include vomiting and diarrhea. In severe cases, a food allergy can lead to anaphylaxis, which requires emergency medical treatment.
Step-by-step explanation:
A common allergy for young children is oats.
Food allergies occur when the immune system reacts to substances in food as though they were harmful "foreign invaders." Some of the foods most likely to cause allergies include nuts, eggs, grains, and milk. Symptoms of food allergies can vary, but often include vomiting, diarrhea, itching, swelling, and trouble breathing. In severe cases, a food allergy can lead to anaphylaxis, which requires emergency medical treatment.