I had a rash on my arm that I thought was from a bug bite. After 2 years and countless appointments with 10 doctors, I finally got a lupus diagnosis. When I was in high school, I got a rash on my arm ...

More information has emerged about “COVID arm” — a delayed arm rash appearing after Moderna’s COVID-19 vaccine is administered — including likelihood, duration and treatment. Researchers examined 16 ...

Getting COVID-19 can cause all manner of odd skin reactions. A new study finds some of them, including COVID toes, a measleslike rash and shingles also can be rare, and thankfully brief, side effects ...

Herpes simplex labialis (HSL) is a common disease caused most often by herpes simplex virus type 1 (HSV-1). Primary infection is usually acquired during childhood or adolescence through direct mucosal ...

Pain, swelling, and a rash at the injection site are common reactions to Covid-19 vaccines. Less commonly, someone may develop “COVID arm,” an exaggerated skin reaction to the vaccine. COVID arm is an ...

Medically reviewed by Susan Bard, MD Key Takeaways A pimple-like rash can be caused by many conditions like rosacea, ...

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 really ...