Medically reviewed by Lauren Schlanger, MD Ringworm (dermatophytosis) is a contagious skin infection that causes an itchy, ring-shaped rash. The best fungus-fighting treatment for ringworm depends on ...

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

I usually go to the gym five days a week but I couldn't go for a month because I had to wait for my doctor to give me the all clear.' Mrs Samnang, who was infected with ringworm in September of ...