However, it can also be quite large, extending over most of the arm. Reports of rash size have varied from study to study. One report described a COVID arm rash measuring up to 14 centimeters (cm ...

Medically reviewed by Casey Gallagher, MD Armpit rashes often develop due to allergic reactions, infections, and chronic conditions. Rashes are common under the arms because the skinfold creates a ...

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 ...

The skin there had several large and small red marks that wrapped around her arm. “This is not a rash,” she said in the video. “This is the burn that I sustained yesterday from grilling corn.” ...