Medically reviewed by Jurairat J. Molina, MD A circular rash is commonly caused by a fungal infection called ringworm. However, there are many rashes that look like ringworm but aren’t. They may be ...

Rashes can be maddeningly itchy, no matter what the cause. Doctors are likely to prescribe creams, lotions, or antihistamines for relief. They may also suggest cold compresses or other home remedies.