anaphylaxis

4 definitions found

anaphylaxis - Collaborative International Dictionary of English v.0.48 :

  anaphylaxis \an`a*phy*lax"is\ n.
     ([a^]n`[.a]*f[imac]*l[a^]k"s[i^]s or
     [a^]n`[.a]*f[i^]*l[a^]k"s[i^]s)
     1. [Gr. 'ana` back, way from + fy`laxis security,
        protection.]
  
     1. (Med.) Hypersensitivity (to a foreign antigen) resulting
        from prior contact with the same or a related substance.
        [WordNet 1.5 + AS]
  
     2. (Med.) An immediate but transient systemic reaction to an
        antigenic substance to which a person has become
        hypersensitized; it is characterized by the contraction of
        smooth muscle and capillary dilation. --[Stedman]
        [PJC + AS]
  
     Note: The cascade of events is triggered by binding of the
           foreign antigen to immunoglobulin E and release of
           mediators such as histamine, bradykinin, serotonin, and
           slow-reacting substance from mast cells. It involves
           more than one organ system. The most commonly involved
           organs are skin, cardiovascular, respiratory and
           gastrointestinal systems. Anaphylaxis is manifested by
           a range of signs and symptoms including pruritus,
           urticaria, itching, dyspnea, abdominal pain and
           cardiovascular collapse (shock). A severe form of the
           reaction is called anaphylactic shock. --[Stedman]
           [PJC + AS]
  
     3. (Med) Anaphylactic shock.
        [AS]

  anaphylactic shock \anaphylactic shock\ n.
     ([a^]n`[.a]*f[imac]*l[a^]k"t[i^]k sh[o^]k`) (Med.)
     Shock resulting from anaphylaxis[2]. It is a severe form of
     physiological shock, often having a fatal outcome, and is
     caused by an extreme immunological reaction to antigens. It
     is characterized by smooth muscle contraction and capillary
     dilation throughout the body, initiated by antibodies of the
     IgE class. It is usually seen when an antigen to which a
     person has become hypersensitized is injected intravenously
     or subcutaneously. It is also called generalyzed anaphylaxis
      or systemic anaphylaxis, and sometimes
     anaphylaxis. --[Stedman]
     [PJC + AS]

anaphylaxis - WordNet (r) 2.1 (2005) :

  anaphylaxis
      n 1: hypersensitivity reaction to the ingestion or injection of
           a substance (a protein or drug) resulting from prior
           contact with a substance

anaphylaxis - Moby Thesaurus II by Grady Ward, 1.0 :

  34 Moby Thesaurus words for "anaphylaxis":
     allergy, considerateness, delicacy, empathy, exquisiteness,
     fineness, hyperesthesia, hyperpathia, hypersensitivity,
     identification, irritability, nervousness, oversensibility,
     oversensitiveness, overtenderness, passibility, perceptiveness,
     perceptivity, photophobia, prickliness, responsiveness,
     sensitiveness, sensitivity, sensitization, soreness,
     supersensitivity, sympathy, tact, tactfulness, tenderness,
     tetchiness, thin skin, ticklishness, touchiness