What do i need to know about scarlet fever?

Contagious: Scarlet fever is a form of strep throat. The bacteria that infect the throat produce a substance that give you the rash. It can be treated with antibiotics. If it is left untreated it can cause rheumatic fever which affects the heart. Someone with a strep infection is not contagious after having been on antibiotics for 24 hours.

Scarlet fever: The rash is caused by group a strep infection&the antigen in the bacteria causes damage 2 kidneys, heart, brain, joints, skin which is called rheumatic fever. The throat infection is usually self limiting but if not treated, certain strains of the bacteria can cause rheumatic fever which is manifested in the above mentioned body systems. If u start antibiotics u should finish all 10 days course.