Is it normal to have a red and swollen patch on my arm 1 week after the Moderna vaccine?

Question

I started to get this plaque 1 week after the Moderna vaccine (located where the vaccine shot was). I have had it for 4 days. It wanted to diminish and fade, but since today it is more red and a little swollen. Should I consult? Perfect, thank you!

Sarah-Yan Chagnon · Accepted Answer

Hello, Studies are increasingly reporting delayed reactions to vaccination following the Pfizer and Moderna messenger RNA vaccines. These reactions appear more than 7 days after vaccination in the form of redness, swelling and heat. The extent can be quite variable. These are different from cellulitis, a rare post-vaccine skin infection that usually occurs 48-72 hours after a vaccine As a precaution, it is suggested that a line be drawn around the redness to monitor its progress. However, these delayed reactions to vaccination are self-limiting after a few days. If you have pain, it is possible to take pain medication and apply ice for 15 minutes every hour We look forward to hearing from you, Sarah-Yan Chagnon, pharmacist