Hypersensitivity
Hypersensitivity refers to an exaggerated immune response to a substance (allergen) that is usually harmless, like pollen or certain foods. When someone with hypersensitivity encounters an allergen, their immune system reacts excessively, causing symptoms such as itching, swelling, or even severe reactions like anaphylaxis. There are different types of hypersensitivity reactions, classified by how the immune system responds—some involve antibodies, while others involve immune cells. Essentially, hypersensitivity is your immune system overreacting to things it mistakenly believes are threats, leading to discomfort or health issues.
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Hypersensitivity refers to an exaggerated immune response to certain substances, known as allergens, which can lead to various allergic reactions. This can manifest as symptoms like sneezing, itching, rashes, or even more severe reactions such as anaphylaxis. Common allergens include pollen, dust, animal dander, and certain foods. The body mistakenly identifies these harmless substances as threats, triggering an immune response. There are different types of hypersensitivity reactions, classified into four categories, each with varying mechanisms and severity. Understanding hypersensitivity is crucial for managing allergies and ensuring appropriate treatment.