A serious and potentially life threatening allergic reaction is known as anaphylaxis. The symptoms of this include swelling in the airway, serious breathing difficulties, decrease in blood pressure, loss of consciousness and possibly death. Children with severe allergies, a reaction may occur from touching or breathing particles of food.  Children who have an anaphylactic reaction they are required to have an injection of EpiPen which will prevent the reaction from becoming life threatening. 
Children can be allergic to a wide range of foods but the most common foods are milk, eggs, peanuts, soy ,wheat, tree nuts such as walnuts and cashews, fish and shellfish such as prawns

Incidence: Food allergies occur in approximately 1 in 20 children. Age groups between 0-4 years admissions due to food allergies have increased. Over the past decade, hospital admissions of anaphylaxis have doubled. 

http://www.allergycapital.com.au/allergycapital/allergies_in_australia.html 

Intellectual
Educated on allergies and how to treat others if they also have one. Having to be smart with knowing what foods they can and can’t eat

Emotional
May be sad or depressed as they not be able to experience new foods like other people can due to there being something in it that they're allergic to.

Social
Unable to share food with others Taking caution when going out to dinner with friends

Behavioural:
Breastfeeding: exclusive breastfeeding in the first four to six months of a child's life can protect against the development of food allergies in early childhood. If a child is allergic to a particular food, then it is important for the breastfeeding mother to avoid eating that food.
Early commencement of solid foods: starting a child on solid foods earlier than recommended can increase the risk of developing food allergies in early childhood.
Accidental consumption of foods causing an allergic response: children with food allergies may consume food that they are allergic to. Children must be taught not to take food from other children and consume only food that has been specifically prepared for them.

Physical Environment:
Availability of foods causing allergic responses: where children have access to foods they are allergic to, there is an increased risk of an allergic response.

Social Determinants
Education: education plays a key role in understanding the causes of food allergies and how to prevent an allergic reaction. For a child with anaphylaxis, education regarding how to effectively administer the EpiPen is important for ensuring that the child is treated appropriately.
Family: the types of foods that are eaten within a family can reduce the risk of a child with a food allergy having a reaction. It is the responsibility of family members to ensure that a child is not at risk and appropriate supervision of a child will assist in ensuring that they do not consume foods that could potentially cause an allergic reaction.
Access to health care: children who experience a severe allergic reaction require an injection of epinephrine in order to prevent the reaction from becoming life threatening. Children who have an allergic reaction are required to be monitored in a medical facility for at least four hours to ensure that they have effectively recovered from the anaphylactic reaction.

             •    Don’t share food.
             •    Wash hands after eating 
             •    Ask a friend what they are allergic to.

             •    Get help immediately if a schoolmate has a reaction.