Medically reviewed by Casey Gallagher, MD Fact checked by Khara Scheppmann Armpit rashes can be caused by allergic reactions, ...

For those who have experienced COVID arm rash, your healthcare provider may recommend getting the next shot in the other arm.

Hives and rashes are two skin conditions that can look fairly similar. Here, experts explain the difference between hives and a rash, plus treatments.

All the hairs have disappeared from a three-inch long patch on my left arm. The bare patch is half the width of my arm and extends just onto the back of my left hand. It is red, inflamed and ...

Some recipients of the Moderna COVID-19 vaccine have reported a red, welted rash that showed up days after they got their shots. This delayed skin reaction occurred in less than 1% of phase 3 ...

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 ...

Madison Olexson is a medical student at St. George’s University School of Medicine in Grenada, West Indies. Stephen Schleicher, MD, is director of the DermDox Dermatology Centers, associate ...