Rheumatic fever (RF) and scarlet fever are both caused by group A Streptococcus bacteria, but they present with different symptoms and complications, some of them potentially serious. Scarlet fever is ...

Scarlet fever, or scarlatina, is a bacterial infection that causes a distinctive bright red sandpaper-like rash. Streptococcus pyogenes (group A strep)—the same bacteria responsible for strep ...

My 1-year-old daughter recently got sick. She cried nonstop, she ran a fever, and her body broke out in a fiery red, spotty, measleslike rash. But it wasn't measles. (Recent outbreaks notwithstanding, ...