Search
for

    GlossaryAllergic Reactions (Hypersensitivity Reaction)

    immune system overreacts to harmless substances, causing symptoms

    An allergic reaction, also known as a hypersensitivity reaction, occurs when the immune system mistakenly identifies a harmless substance (allergen) as a threat and overreacts to it. This can lead to symptoms ranging from mild, such as itching and sneezing, to severe, such as anaphylaxis, which can be life-threatening. Common allergens include pollen, pet dander, certain foods, and insect stings.

    Related Terms

    Learn

    0 / 0 results
    — no results

    Research

    5 / 1000+ results

    Community Join

    5 / 14 results