Polyarthralgia and Myalgia Syndrome after ChAdOx1 nCOV-19 Vaccination.

Since February 26, 2021, when vaccination against coronavirus disease 2019 (COVID-19) began in South Korea, patients who visited the Korea University Guro Hospital with suspected adverse events after COVID-19 vaccination were monitored actively with interest. We encountered five unusual cases of polyarthralgia and myalgia syndrome in patients who received the ChAdOx1 nCOV-19 (AstraZeneca) vaccine. The patients (median age 67 years) were not previously diagnosed with arthropathy and rheumatologic diseases. They developed fever, myalgia, joint pain, and swelling three to seven days after vaccination. The symptoms persisted for up to 47 days despite antipyretic treatment. Arthralgia occurred in multiple joints, including small and large joints. A whole-body Technetium-99m methylene diphosphonate bone scan revealed unusual uptakes in the affected joints. Non-steroidal anti-inflammatory drugs with or without prednisolone relieved the symptoms of all patients. Further monitoring is required to clarify the long-term prognosis of this syndrome. © 2021 The Korean Academy of Medical Sciences.

Citation

Hakjun Hyun, Joon Young Song, Hye Seong, Jin Gu Yoon, Ji Yun Noh, Hee Jin Cheong, Woo Joo Kim. Polyarthralgia and Myalgia Syndrome after ChAdOx1 nCOV-19 Vaccination. Journal of Korean medical science. 2021 Aug 30;36(34):e245

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PMID: 34463066

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