[Allergic emergencies].
Some allergenic aggressions produce life threatening reactions requiring an emergency treatment. Anaphylaxis is related to relatively isolated exposures: drugs, food, hymenoptera stings. Anaphylactic shock is a life threatening reaction due to several mechanisms of mast cells degranulation. Exercise-induced anaphylaxis is sometimes symptomatic of food allergy, and idiopathic anaphylaxis may also represent a severe reaction. Adrenaline is the mainstay for emergency treatment; it has to be used as soon as possible, according to correct procedures as a first-step treatment. Emergency treatment may also be required after an allergenic exposure, especially fungal, responsible for allergic asthma exacerbation, severe cutaneous or mucosal lesions (laryngeal oedema, angiooedema...).
Herman
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Service de médecine interne et allergologie, hôpital Bichat, Paris.
D000707:Anaphylaxis / Q000175:diagnosis / Q000209:etiology / Q000276:immunology / Q000628:therapy; D002908:Chronic Disease; D004630:Emergencies; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology / Q000628:therapy*
Urgences allergiques.