idiopathic anaphylaxis


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idiopathic anaphylaxis

Anaphylaxis of uncertain cause. Some evidence suggests it may occasionally result from exposure to food allergens.
See also: anaphylaxis
References in periodicals archive ?
Idiopathic anaphylaxis is an anaphylaxis syndrome in which no specific triggering cause can be demonstrated.
Here, we discuss the effect of omalizumab in malignant idiopathic anaphylaxis in light of recent literature by presenting our treatment experience in a patient with steroid-dependent malignant idiopathic anaphylaxis.
With these clinical and laboratory findings, a diagnosis of idiopathic anaphylaxis was made, because no relationship with any known triggering factor could definitively be demonstrated.
The patient was thought to have steroid-dependent malignant idiopathic anaphylaxis because the prednisolone dose could not be reduced below 30 mg daily.
This observation may be unrealistic, since idiopathic anaphylaxis requires continued evaluation and reassessment over time to exclude an identifiable but elusive cause.
A 74-year-old man was referred for evaluation of recurrent urticaria and idiopathic anaphylaxis, which he reported he had had since 1963.
There is also a group of patients, such as the patient in this report, who have idiopathic anaphylaxis in whom an antigen or precipitating factor is not identified.[8] A number of diseases may mimic idiopathic anaphylaxis, such as mastocytosis, hereditary angioedema, carcinoid syndrome, pheochromocytoma, and asthma.
In summary, our case report suggests that the syndrome of idiopathic anaphylaxis and urticaria may at times be related to penicillin allergy, often resulting from the ingestion of small amounts of this drug contaminating food products.

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