Medically reviewed by Jurairat J. Molina, MD A circular rash is commonly caused by a fungal infection called ringworm.

You might occasionally notice a new mark on your body, whether it's on your arm ... result in a purple-red rash appearing on the cheeks and the bridge of the nose. Shaped somewhat like a delicate ...

the gym or even sleeping in the same bed as her husband until the ring-shaped rash was gone. The cosmetologist believes she caught a "severe" bout of ringworm when her bare arms touched the pads ...

The gym goer caught an infection after failing to wipe down gym equipment and is urging others to be more cautious ...