What are allergies? An allergy is an overreaction of the immune system to a substance that is harmless for most people. But in an allergic person, the immune system treats the substance (called allergens) as an invader and reacts inappropriately, causing symptoms that can range from mild discomfort to problems that may endanger the life of the individual. The immune system of an allergic person, in an attempt to protect the body against something he perceives as a threat, it produces antibodies called immunoglobulin E (IgE) against the allergen. In turn, these antibodies cause cells called mast cells to release certain chemicals, including histamine, into the bloodstream to defend against the allergen “invader.” It is the release of these chemicals that causes allergic reactions affecting the eyes, nose, throat, lungs, skin and / or gastrointestinal tract. tuation. The subsequent exposure to the allergen (substances such as pollen or fruit dry) will trigger the same allergic reaction.
This means that every time a person is exposed or that allergen, whether eating certain food or by touching or breathing in a substance, exhibit an allergic reaction. ! – (Size: 21cm 29.7cm; margin: 2cm) P (margin-bottom: 0.21cm) H3 (margin-bottom: 0.21cm) – Why do some people develop allergies? The tendency to develop allergies often have a hereditary basis, which means that you can “transmit” from parents to offspring through genes. Anyway, the fact that you, your spouse or one child is allergic to something does not mean that all children must necessarily carry any allergies.