anaphylaxis

Microbiology

(noun)

A rapid and severe allergic reaction which can lead to death

Related Terms

  • mast cells
  • hives
  • allergen
  • Beta-lactam antibiotics
Physiology

(noun)

A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock.

Related Terms

  • sho
  • septic shock
  • patch test
  • neurogenic
  • shock
  • cardiogenic shock
  • distributive shock
  • allergen
  • hypovolemic shock

Examples of anaphylaxis in the following topics:

  • Type I (Anaphylactic) Reactions

    • Anaphylaxis typically produces many different symptoms over minutes or hours.
    • Anaphylaxis can be caused by the body's response to almost any foreign substance.
    • Anaphylaxis caused by exercise is often also linked to eating certain foods.
    • Hives and flushing on the back of a person with anaphylaxis
    • Hives and flushing on the back of a person with anaphylaxis
  • Allergic Responses to Drugs

    • The worst allergic reactions can be very severe and result in anaphylaxis .
    • Anaphylaxis is an extremely severe allergic reaction caused when histamines are overproduced leading to severe contraction of bronchial muscles.
    • While the most severe cases can result in anaphylaxis, most reactions are not severe.
    • A representation of the signs and symptoms of anaphylaxis that result from an allergic reaction.
  • Signs and Symptoms of Shock

    • With anaphylaxis, hives may present on the skin, and there may localized edema, especially around the face, and weak and rapid pulse.
    • Hives and flushing on the back of a person with anaphylaxis.
  • Allergies

    • In some people, severe allergies to environmental or dietary allergens or to medication may result in life-threatening reactions called anaphylaxis.
    • A response can take the the form of a rash (urticaria, also known as hives), or, worse—anaphylaxis (a serious reaction that can result in death).
  • Hypersensitivity

    • Associated disorders: Atopy, anaphylaxis, asthma.
  • Antibiotics and Selective Toxicity

    • Adverse effects range from fever and nausea to major allergic reactions, including photodermatitis and anaphylaxis.
  • Diagnosis and Treatment of Allergy

    • However, while avoidance of allergens may reduce symptoms and avoid life-threatening anaphylaxis, it is difficult to do for those with allergies to pollen or other airborne allergens.
  • Cells and Organs of the Immune System

    • They are most often associated with allergy and anaphylaxis.
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