Erysipelas (; Greek ἐρυσίπελας— "red skin"; also known as "ignis sacer", "holy fire", and "St. Anthony's fire" in some countries) is an acute infection typically with a skin rash, usually on any of the legs and toes, face, arms, and fingers. It is an infection of the upper dermis and superficial lymphatics, usually caused by beta-hemolytic group A Streptococcus bacteria on scratches or otherwise infected areas. Erysipelas is more superficial than cellulitis, and is typically more raised and demarcated.