Medically reviewed by Renee Nilan, MDMedically reviewed by Renee Nilan, MD COVID arm rash is a delayed hypersensitivity reaction that occurs approximately five days after the COVID-19 vaccine.

The rash and the itching might be due to an allergic reaction, and so waxing might be the culprit, but it's more likely that your anti-perspirant is to blame. Try switching from an aerosol to an ...

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"Going to these parties with unvaccinated children puts them at extraordinary risk for disease," an expert tells PEOPLE ...

Sammy explained: "He was complaining about under his arm [armpit] hurting ... see his temperature reading - but that was when I saw a rash. "My first thought was that it was chicken pox and ...