Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Allergy to Omalizumab: Lessons from a Reaction to the Coronavirus 2019 Vaccine
Takeshi MatsumotoYumiko SakuraiTakahiro FujikiYusuke KusakabeEmi NakayamaAyaka TanakaNaoki YamamotoKensaku AiharaShinpachi YamaokaMichiaki Mishima
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JOURNAL OPEN ACCESS

2023 Volume 62 Issue 8 Pages 1219-1222

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Abstract

Omalizumab can cause hypersensitivity reactions. We herein report the first case of an 18-year-old woman with refractory cough-predominant asthma that correlated with allergic reactions caused by omalizumab and the coronavirus disease 2019 (COVID-19) vaccine. The patient developed angioedema after taking omalizumab. She had previously experienced intense coughing immediately after receiving a COVID-19 vaccine. A skin prick test was positive for polysorbate 20, which was probably the cause of the allergic reactions to omalizumab and the COVID-19 vaccine. Clinicians should check for an allergic reaction, irrespective of its intensity, triggered by polysorbate and be careful when prescribing biologics to patients in order to avoid allergic reactions.

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© 2023 by The Japanese Society of Internal Medicine
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