DOI: 10.12890/2021_002249

Metamizole-Induced Type I Kounis Syndrome

Authors

  • Catarina Lameiras Department of Internal Medicine, Hospital Professor Doutor Fernando Fonseca EPE, Amadora, Portugal
  • Ana Corte-Real Department of Internal Medicine, Hospital Professor Doutor Fernando Fonseca EPE, Amadora, Portugal
  • Ana Órfão Department of Internal Medicine, Hospital Professor Doutor Fernando Fonseca EPE, Amadora, Portugal
  • Marta Mendes Lopes Department of Internal Medicine, Hospital Professor Doutor Fernando Fonseca EPE, Amadora, Portugal
  • Maria do Céu Dória Department of Internal Medicine, Hospital Professor Doutor Fernando Fonseca EPE, Amadora, Portugal

anaclameirasm01@gmail.com

Keywords

Kounis syndrome, anaphylactic reaction, myocardial infarction, metamizole

Abstract

Kounis syndrome (KS) is defined as acute coronary syndrome (ACS) triggered by mast cell and platelet activation in the setting of allergic or anaphylactic insults. KS is a unique and complex cause of ACS and many cases may be missed due to its highly variable clinical manifestations. In this report, we present a case of KS type I triggered by metamizole in the absence of a previous history of allergy to this drug. Following the administration of metamizole, the patient developed generalized acute urticaria, chest pain and diaphoresis. Electrocardiography (ECG) showed ST-segment elevation suggestive of myocardial infarction complicated by ventricular tachycardia. No coronary disease was observed on coronary angiography. The cardiac manifestations of KS may be life-threatening, and so it is important to appropriately recognize and treat this condition.

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References

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Published

2021-02-08

Issue

Vol. 8 No. 2 (2021)

How to Cite

1.
Lameiras C, Corte-Real A, Órfão A, Mendes Lopes M, Dória M do C. Metamizole-Induced Type I Kounis Syndrome. EJCRIM [Internet]. 2021 Feb. 8 [cited 2026 Nov. 3];8(2). Available from: https://ejcrim.com/index.php/ejcrim/article/view/2249

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