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Updated: Oct 30, 2025

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Published on: May 31, 2021
Allergic reactions to midazolam: A case series from an Italian allergy unit
Eleonora Nucera1, Giuseppe Parrinello1, Alessandro Buonomo1
1Allergy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Abstract:
Midazolam is a short-acting benzodiazepine with central nervous system depressing action, commonly used for conscious sedation for various procedures and for its pharmacologic properties.In literature, severe adverse reactions to this drug are described, but only in few cases positive allergological tests were demonstrated.The authors collected herein five clinical cases of different allergic reactions to midazolam demonstrated by positive skin tests.
Insights
Allergic reactions to midazolam, a common sedative, can occur. This study confirms these reactions with positive skin tests in five patients, highlighting a need for awareness.
Area of Science:
- Pharmacology
- Allergology
- Clinical Medicine
Background:
- Midazolam is a widely used short-acting benzodiazepine for conscious sedation.
- Adverse reactions to midazolam are documented, but confirmed allergic responses are rare in literature.
Observation:
- The study presents five distinct clinical cases of allergic reactions attributed to midazolam.
- These reactions manifested in various ways, indicating a spectrum of hypersensitivity.
Findings:
- Positive allergological tests, specifically skin tests, were demonstrated in all five cases.
- This provides objective evidence linking midazolam exposure to allergic responses.
Implications:
- Clinicians should consider midazolam allergy in patients experiencing adverse reactions.
- Further investigation into midazolam hypersensitivity mechanisms and diagnostic approaches is warranted.
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