• Laure Irani, Mira Bou Karroum, Yara Chehab, Nesrine Abi Saad, Ali Al Dailaty, and Roula Husni.
• Division of Rheumatology, Department of Internal Medicine, LAU Medical Center - Rizk Hospital, Zahar St., Achrafieh, Beirut, Lebanon.
• Medicine (Baltimore). 2024 Oct 25; 103 (43): e40204e40204.

RationaleSince the onset of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic in 2019, considerable resources have been devoted to developing vaccines to reduce related deaths and the burden of disease. Various vaccine formulations eventually became available and were approved for clinical use. In this article, we have conducted a review of polymyalgia rheumatica (PMR) cases induced by different COVID-19 vaccines [Pfizer: BNT162b2, AstraZeneca: ChAdOx1-S, Moderna: mRNA-1273, and Janssen: Ad26.COV2.S)], as well as non-COVID-19 vaccines, such as influenza, zoster, hepatitis B, and tetanus vaccines. Additionally, this article investigates 3 cases with clinical presentations suggestive of PMR following COVID-19 mRNA vaccination. This study aims to offer valuable insights through sharing diagnostic and therapeutic experiences.Patient ConcernsThree patients presented with severe pain and stiffness in both shoulder and pelvic girdle muscles, following COVID-19 mRNA vaccination.DiagnosesClinical presentations, laboratory parameters, and echographic findings confirmed the diagnosis of PMR following COVID-19 mRNA vaccination.InterventionsPatients received Prednisone and/or Methotrexate adjusted to body weight.OutcomesPolymyalgia rheumatica resolved successfully without any adverse events.LessonsAlthough direct causality was not definitively established in this article, the BNT162b2 COVID-19 mRNA vaccine, similar to other vaccines, might be considered a potential trigger for PMR. This raises the need for further research into this issue and potentially other immunological outcomes.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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