‘Covid Arm’ Rash After the Moderna Shot Is Common but Not Worrisome

Reactions frequently occur after vaccines while the immune system is doing its thing

Photo: Steven Cornfield/Unsplash
Photos courtesy of the author
Amanda (last name withheld) said hers started exactly a week after the shot. This was the first day, and it grew larger from here.
Beth Brown’s reaction was a substantially raised lump that was tender for almost three weeks.

Not a reason for concern

“Cathy” (name withheld by request) said hers seemed to widen and “leach out” until it was the size of the palm of her hand. She began taking Benadryl on the eighth day for a couple days. She was a bit anxious about the second shot but did not experience the reaction again. “I consider the peace of mind for limiting my chances of a bad case of Covid worth it,” she said. “I feel liberated with two vaccines in my system.”
Image courtesy of Kristen Kitchens

What to do if you experience this skin reaction

This raised rash is similar to those reported in the NEJM study. (Name withheld by request)
For some, the rash looked like a doughnut or ring. (Name withheld by request)
Amanda Shinga Bussell is immunocompromised and said the vaccine’s side effects were a bit rougher on her than her husband. “But even then, a few days of exhaustion and soreness is a small price to pay for, you know, life,” she said.

Tara Haelle is a science journalist, public speaker, and author of Vaccination Investigation and The Informed Parent. Follow her at @tarahaelle.

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