Opinion statement
Drug-induced anaphylaxis (DIA) is a severe, life-threatening reaction occurring after drug exposure. It is an important cause of anaphylaxis and accounts for up to one third of drug hypersensitivity reactions. As in other anaphylaxis reactions, immunoglobulin E (IgE) has an important role in its mechanism, but other non-immunological reactions may also occur in DIA. Cutaneous and respiratory symptoms are present in a majority of patients, and cardiovascular events are more common in elderly patients. A complete work up is recommended not just to offer safe alternatives, but also to avoid incorrect labeling of patients as allergic to drugs. The investigation includes in vitro tests when available, followed by skin prick and intradermal tests. Although provocation tests are still considered the “gold standard” for the diagnosis of drug allergy, in DIA, the risk versus benefit ratio must be analyzed. Non-steroid anti-inflammatory drugs and antibiotics are the drug classes more frequently involved. Neuromuscular blocking agents, chemotherapeutic drugs, and biologics are commonly related to reactions in a hospital setting. Prevention measures include an individualized education plan, with recommendations to avoid the culprit drug and potential cross-reactive medications. In selected patients, desensitization can induce a temporary state of tolerance. Protocols are available and can be adapted for drugs used in different situations, from cancer treatment to enzyme replacement therapy.
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Dr. Mara Morelo Rocha Félix and Dr. Carolina Sanchez Aranda declare that they have no conflicts of interest.
Dr. Luis Felipe Ensina reports personal fees from MYLAN, outside the submitted work.
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Ensina, L.F., Félix, M.M.R. & Aranda, C.S. Drug-Induced Anaphylaxis: Clinical Scope, Management, and Prevention. Curr Treat Options Allergy 3, 243–252 (2016). https://doi.org/10.1007/s40521-016-0085-1
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DOI: https://doi.org/10.1007/s40521-016-0085-1