Certainly! Allergies are a common health condition that affects millions of people worldwide. An allergy is an immune system response to a substance that the body perceives as a threat, even though it is harmless to most people. These substances are known as allergens and can include things like pollen, dust, certain foods, medications, and pet dander, among others.When an allergen enters the body, the immune system produces antibodies called Immunoglobulin E (IgE) to fight it off. This triggers the release of chemicals, such as histamine, which cause the symptoms associated with an allergic reaction. Common symptoms of allergies include sneezing, runny nose, itchy eyes, skin rash, and difficulty breathing.