Matthew Dibble, 40, began experiencing painful headaches and was taken to the A&E department at St Thomas’ Hospital, London, on May 8, reported MailOnline.
The musician was sent home to rest in Lewisham, south London, but was back in the hospital after two days.
It was reported that doctors raced to try and reduce the swelling which was taking over his brain.
He sadly passed away soon after.
Southwark Coroner’s Court heard on Tuesday that his headaches began shortly after he was administered the first dose of the AstraZeneca Covid vaccine.