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    Did you mean Hypersensitivity Reaction?
    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.

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      Cutaneous Drug Reactions

      research Cutaneous Drug Reactions

      1 citations , January 2010 in “Elsevier eBooks”
      Any drug can cause skin reactions, but antibiotics, NSAIDs, and psychotropic drugs are more common, with some reactions being life-threatening.
      Mucocutaneous Reactions to Chemotherapy

      research Mucocutaneous Reactions to Chemotherapy

      275 citations , March 1999 in “Journal of The American Academy of Dermatology”
      Chemotherapy can cause various skin reactions, with hair loss being the most common, and proper diagnosis and treatment of these reactions are important.
      Drug-Induced Skin, Nail, and Hair Disorders

      research Drug-Induced Skin, Nail, and Hair Disorders

      114 citations , January 2007 in “Drug Safety”
      Some drugs can cause skin, nail, and hair problems, which are important for healthcare professionals to recognize and report.

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