Abstract
Drug hypersensitivity reactions are unpredictable adverse drug reactions. They manifest either within 1–6 h following drug intake (immediate reactions) with mild to life-threatening symptoms of anaphylaxis, or several hours to days later (delayed reactions), primarily as exanthematous eruptions. It is not always possible to detect involvement of the immune system (allergy). Waiving diagnostic tests can result in severe reactions on renewed exposure on the one hand, and to unjustified treatment restrictions on the other. With this guideline, experts from various specialist societies and institutions have formulated recommendations and an algorithm for the diagnosis of allergies. The key principles of diagnosing allergic/hypersensitivity drug reactions are presented. Where possible, the objective is to perform allergy diagnostics within 4 weeks–6 months following the reaction. A clinical classification of symptoms based on the morphology and time course of the reaction is required in order to plan a diagnostic work-up. In the case of typical symptoms of a drug hypersensitivity reaction and unequivocal findings from validated skin and/or laboratory tests, a reaction can be attributed to a trigger with sufficient confidence. However, skin and laboratory tests are often negative or insufficiently reliable. In such cases, controlled provocation testing is required to clarify drug reactions. This method is reliable and safe when attention is paid to indications and contraindications and performed under appropriate medical supervision. The results of the overall assessment are discussed with the patient and documented in an „allergy passport“ in order to ensure targeted avoidance in the future and allow the use of alternative drugs where possible.
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Abbreviations
- ACTH:
-
Adrenocorticotropic hormone
- AGEP:
-
Acute generalized exanthematous pustulosis
- CAST:
-
Cellular antigen stimulation test
- DRESS:
-
Drug reaction with eosinophilia and systemic symptoms
- EBV:
-
Epstein-Barr virus
- ELISpot:
-
Enzyme-Linked ImmunoSpot
- ENDA:
-
European Network on Drug Allergy
- HIV:
-
Human immunodeficiency virus
- HLA:
-
Human leukocyte antigen
- Ig:
-
Immunoglobulin
- NA:
-
Not applicable or no concentration recommended
- NSAID:
-
Non-steroidal anti-inflammatory drug
- sIgE:
-
Specific immunoglobulin E
- SJS:
-
Stevens-Johnson syndrome
- TEN:
-
Toxic epidermal necrolysis
- ADR:
-
Adverse drug reactions
- UV:
-
Ultraviolet radiation
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The information on potential conflicts of interest have been reviewed by a steering-group which did not find any conflicts of interest which may affect the authors’ independency in the process of the development of this guideline. The authors’ disclosures are available in a table (together with the working-report on this guideline) on the AWMF-page of the S2k-Guideline for the diagnosis of drug hypersensitivity reactions via www.awmf.org/leitlinien/detail/ll/061-021.html.
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Brockow K, Przybilla B, Aberer W, Bircher AJ, Brehler R, Dickel H, Fuchs T, Jakob T, Lange L, Pfützner W, Mockenhaupt M, Ott H, Pfaar O, Ring J, Sachs B, Sitter H, Trautmann A, Treudler R, Wedi B, Worm M, Wurpts G, Zuberbier T, Merk HF. Guideline for the diagnosis of drug hypersensitivity reactions. S2K-Guideline of the German Society for Allergology and Clinical Immunology (DGAKI) and the German Dermatological Society (DDG) in collaboration with the Association of German Allergologists (AeDA), the German Society for Pediatric Allergology and Environmental Medicine (GPA), the German Contact Dermatitis Research Group, the Swiss Society for Allergy and Immunology (SGAI), the Austrian Society for Allergology and Immunology (ÖGAI), the German Academy of Allergology and Environmental Medicine (DAAU), the German Center for Documentation of Severe Skin Reactions and the German Federal Institute for Drugs and Medical Products (BfArM). Allergo J Int 2015;24:94–105 DOI: 10.1007/s40629-015-0052-6
A correction to this article is available at http://dx.doi.org/10.1007/s15007-018-1526-x
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Brockow, K., Przybilla, B., Aberer, W. et al. Guideline for the diagnosis of drug hypersensitivity reactions. Allergo J Int 24, 94–105 (2015). https://doi.org/10.1007/s40629-015-0052-6
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DOI: https://doi.org/10.1007/s40629-015-0052-6