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Related to anaphylactoid reaction: anaphylaxis, Anaphylactic reaction


A sudden, usually systemic allergic reaction, characterized by vasodilation resulting in decreased blood pressure, smooth muscle contraction resulting in shortness of breath, and hives, caused by hypersensitivity induced by a secondary exposure to a foreign substance, such as a drug or protein, after an initial sensitizing exposure.

an′a·phy·lac′tic (-lăk′tĭk), an′a·phy·lac′toid (-toid) adj.
an′a·phy·lac′ti·cal·ly adv.


adj anafilactoide
References in periodicals archive ?
The rapid intravenous infusion of vancomycin is associated with RMS, an anaphylactoid reaction.
Delayed anaphylactoid reaction in a worker exposed to chromium.
In one of these case reports, the patient had the complete spectrum of anaphylaxis but did not have a history of allergies or previous exposure of indigo carmine, and the authors suggested that indigo carmine directly may have triggered histamine release, consistent with an anaphylactoid reaction associated with severe hypotension, bronchospasm, and urticaria [6].
Kounis syndrome was described in 1991 as the concurrence of acute coronary events with an allergic or a hypersensitivity response and an anaphylactic or anaphylactoid reaction.
There is no evidence regarding cross reactivity between shellfish allergy and anaphylactoid reaction to contrast.
Table 2 Kidney Disease Improving Global Outcomes (KDIGO) Clinical Practice Guidelines * When making the decision to start IV iron, it is important to determine benefits of improving the patient's overall well-being and anemia-related symptoms, as well as avoiding or minimizing blood transfusion against harm, such as anaphylactoid reaction.
Two cases of anaphylactoid reaction after administration of sugammadex.
Anaphylactoid reaction to intravenous hydrocortisone sodium succinate.
In addition to comparing plasma histamine changes with changes in haemodynamic function, Fahmy (63) measured plasma adrenaline (epinephrine) and noradrenaline (norepinephrine) levels in a patient who had an anaphylactoid reaction to intravenous morphine 0.
In severe cases, an anaphylactoid reaction can occur, with light-headedness, nausea, bronchospasm, and syncope.
Complications from the use of gastrografin in small bowel obstruction are rare, although anaphylactoid reaction and lethal aspiration have been described.
These reactions were reviewed by a clinical allergist and were determined to be consistent with anaphylactic or anaphylactoid reaction.