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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 ?
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.
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.
But she was suddenly hit by an anaphylactoid reaction - a rapid allergic reaction which can affect multiple parts of the body.
1,2) We describe a case of anaphylactoid reaction to hydromorphone responding to IV naloxone treatment.
As a result, FDA permitted McNeil, before the drug's removal from the market, to drop from the package insert a proposed warning about the risk of anaphylactoid reaction to patients who had previously manifested no allergic reactions to Zomax or other drugs in its class.
Intradermal testing after anaphylactoid reaction to anaesthetic drugs; practical aspects of performance and interpretation.
Cevik et al suggested treating the anaphylactic or anaphylactoid reaction with epinephrine, corticosteroids, antihistamines (both H1- and H2-blockers), fluid resuscitation, and oxygen (12).
One serious treatment-related event, an anaphylactoid reaction and hypotension, was seen in an 85-year-old man.
Allergic reactions to certain drugs like penicillins (1), cephalosporins (2), ranging from urticaria to anaphylactic or anaphylactoid reaction, are increasingly encountered in the daily clinical practice.
The cause is still being debated, but the prevailing theory is that the condition results from an anaphylactoid reaction rather than a direct vascular effect of the amniotic fluid, Dr.
The rise in mast cell tryptase to 67 ng/ml at four hours suggests that the peak level (usually at about one to two hours) may have been well over 100 ng/ml, three to four times the subsequent baseline level of 30 ng/ml and would support a diagnosis of an anaphylactic rather than an anaphylactoid reaction.