what causes allergic reactions

Allergic reactions occur when the immune system mistakenly identifies a harmless substance as a threat and produces antibodies, such as Immunoglobulin E (IgE), to combat it. When exposed to the allergen again, these antibodies trigger the release of immune system chemicals, such as histamine, leading to allergy symptoms. Common triggers for allergic reactions include airborne allergens like pollen, animal dander, dust mites, and mold, as well as certain foods, insect stings, medications, and substances that come into contact with the skin. Risk factors for developing allergies include having a family history of asthma or allergies, being a child, or having asthma or another allergic condition. Allergic reactions can manifest as a range of symptoms, from mild to severe, and may lead to complications such as anaphylaxis and asthma. It is important to consult with an allergist to properly diagnose allergic reactions and develop a management plan.