Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Dysphagia after COVID-19 Vaccination: A Report of Two Cases
Eiko SunamiYoichiro AoyagiMiho OhashiYoko AsanoDaishi OnaiSatoshi WakitaYuta KaitoTsunemi KitagawaTaku YoneyamaSatoshi IkedaArito YozuQing Li
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JOURNAL OPEN ACCESS

2026 Volume 65 Issue 12 Pages 1720-1724

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Abstract

Various adverse reactions to COVID-19 vaccination have been reported; however, no case reports have focused on dysphagia. We herein present two cases of severe dysphagia after COVID-19 vaccination. Case 1: A 24-year-old man with Burkitt's lymphoma developed dysphagia and multiple cranial nerve palsies. Case 2: An 80-year-old man with Parkinson's disease developed aspiration pneumonia and dysphagia. Both patients underwent a detailed dysphagia evaluation and swallowing rehabilitation. According to the Vaccine Adverse Event Reporting System, dysphagia following COVID-19 vaccination is very rare. Clinicians should be aware of the appearance or worsening of dysphagia following COVID-19 vaccination.

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© 2026 by The Japanese Society of Internal Medicine

This article is licensed under a Creative Commons [Attribution-NonCommercial-NoDerivatives 4.0 International] license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
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