Allergic and anaphylactic reactions Allergic reactions occur when the immune system reacts to something in the environment that is normally harmless: e.g. food proteins, pollens or dust mites. Symptoms may be localised or generalised and range from mild to severe. The most common causes of allergy in children are milk, eggs, peanuts, tree nuts, cow milk, soy, wheat, fish and shellfish. Other causes are bee or other insect bites, some medications and latex (rubber). Anaphylaxis is the most severe form of an allergic reaction and is life threatening. Rates of anaphylaxis are not well documented, but are estimated at approximately 5 in every 1000 school children. A reaction can develop within minutes of exposure to the allergen, but with planning and training, a reaction can be treated effectively by using an adrenaline injection (EpiPen®/EpiPen®Jr). An important aspect of anaphylaxis management is prevention and avoidance of the cause. Signs and symptoms Mild to moderate...