In the early 1800s, William Heberden, a physician in London, was the first to report anaphylactoid
purpura, finding it in a 5-year-old boy with hematuria, abdominal pain, arthralgia and a skin rash (l).
Anaphylactic and anaphylactoid
reactions during the perioperative period.
Effects of beta-adrenergic and calcium antagonists on the development of anaphylactoid
reactions from radiographic contrast media during cardiac angiography.
and other acute reactions, unknown long-term risks) in individual patients" (KDIGO Anemia Work Group, 2012, p.
reactions are most commonly caused by radiocontrast media, aspirin, non steroidal anti-inflammatory agents, opioids and muscle relaxants.
reactions have been reported in four women receiving intravenous or oral ranitidine during labor (Br.
14) Hypersensitivity reactions can occur, resulting in anaphylaxis (type 1), anaphylactoid
reactions (complement mediated), or delayed serum sickness (type 3), and are treated with a combination of diphenhydramine and epinephrine.
The 10 other birds likely died of cardiopulmonary collapse and anaphylactoid
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.
The concurrence of ACS with conditions associated with allergic or hypersensitivity and anaphylactic or anaphylactoid
reactions constitutes the Kounis syndrome (1).
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.
Reactions to taxanes are clinically similar to type 1 hypersensitivity reactions but are actually believed to be anaphylactoid
Cases of anaphylactoid
shock, bladder pain, cystitis and abnormal urinalysis have uncommonly been reported.
The overall incidence of adverse reactions for MR contrast agents ranges from approximately 2% to 4%; (10) symptoms include nausea, emesis, urticaria, anaphylactoid
reactions, hypotension, nonspecific ECG changes, injection site discomfort, localised oedema, taste change, etc.