Shoulder Injury Related to Vaccine Administration (SIRVA) After COVID-19 Vaccination: A Retrospective Study

SIRVA is a rare complication following COVID-19 vaccination and is best considered a medicolegal term rather than a definitive diagnosis. Strict adherence to diagnostic criteria is essential, as overdiagnosis may occur among patients with coincidental post-vaccination shoulder pain. While most cases resolve with conservative management, a subset may experience persistent symptoms. Evidence suggests that SIRVA is more likely related to improper injection technique rather than the vaccine itself.