This Halloween remember your Epi-Pen (Epinephrine auto injector).

Epinephrine auto injectors are used in the treatment of sever alleges. Trick-or-treating is a Halloween custom for children in many countries. Children in costumes travel from house to house asking for treats such as candy (or, in some cultures, money) with the phrase “Trick or treat”. The “trick” is a (usually idle) threat to perform mischief on the homeowners or their property if no treat is given to them. Parents know what in the candy especially if your child has an Epi-Pen for anaphylajxis.

What can cause anaphylaxis?

Common causes include foods such as peanuts, tree nuts (e.g. almonds, walnuts, cashews, and Brazil nuts), sesame, fish, shellfish, dairy products and eggs. Non-food causes include wasp or bee stings, natural latex (rubber), penicillin or any other drug or injection. In some people, exercise can trigger a severe reaction — either on its own or in combination with other factors such as food or drugs (e.g. aspirin).

What are the symptoms of a severe allergic reaction?

Why does anaphylaxis occur?

Any allergic reaction, including the most extreme form, anaphylactic shock, occurs because the body’s immune system reacts inappropriately in response to the presence of a substance that it wrongly perceives as a threat. The symptoms are caused by the sudden release of chemical substances, including histamine, from cells in the blood and tissues where they are stored. The release is triggered by the interaction between an allergic antibody called Immunoglobulin E (IgE) and the substance (allergen) causing the anaphylactic reaction. This mechanism is so sensitive that minute quantities of the allergen can cause a reaction. The released chemicals act on blood vessels to cause swelling. In people with asthma, the effect is mainly on the lungs. There may also be a fall in blood pressure. Leading to a cardiac arrest.