Shoulder Injury Related to Vaccine Administration: Diagnosis and Management.

Shoulder injury related to vaccine administration (SIRVA) is a rare but potentially debilitating injury characterized by persistent shoulder pain, typically occurring within 48 hours of intramuscular deltoid vaccine administration. With over 150 million flu vaccines being administered in the United States each year, and the US Centers for Disease Control's goal of immunizing greater than 70% of the population for the coronavirus disease 2019 virus, cases of SIRVA can be expected to rise. A search of current literature was done to identify published material corresponding to incidence, diagnosis, and treatment of SIRVA. Most events have been associated with poor needle placement and/or a local reaction to the delivered serum during vaccine administration. Shoulder injury related to vaccine administration events can lead to persistent and possibly permanent injury. Clinical evaluation involves a thorough history, physical examination, and often diagnostic studies including radiographs, magnetic resonance imaging, and nerve studies. Treatment is individually directed and should initially consist of observation and local symptom management. Recalcitrant cases or infections may warrant surgical intervention. Published outcomes vary widely, and our understanding of SIRVA remains limited. Large-scale studies are necessary to better understand the pathophysiology of SIRVA, its treatment, and its outcomes. Overall, the initial priority in managing SIRVA should be awareness and prevention.