'COVID vaccine arm' may present after both mRNA vaccines vaccination.

On 11th March 2020, the World Health Organization declared the Coronavirus Disease 2019 (COVID-19) outbreak a global pandemic. In view of the rapidly spreading and highly fatal novel virus, the Pfizer-BioNTech (BNT162b2) and the Moderna (mRNA-1273) COVID-19 vaccines were authorised for emergency use. Most common adverse events were immediate local injection site reactions, urticaria and morbilliform eruption.