Is it normal for your arm to swell after a COVID-19 booster vaccine?
Is it normal for your arm to swell after a COVID-19 booster vaccine?
The hypersensitivity can cause redness, swelling, warmth, hardness, itchiness and discomfort around the site of injection. The affected area sometimes grows relatively large and can look like a welt. Symptoms might take days or up to a week to appear. Jan 10, 2022
