Early treatment of strep infections with antibiotics can prevent this condition. Scarlet fever was much more common before antibiotics were widely used. Avoiding contact with people with sore throats may also decrease the risk.
In most cases, there are no long-term effects. Rarely, kidney or heart damage may occur from the strep infection. These are known as poststreptococcal glomerulonephritis, which affects the kidney, and rheumatic fever, which affects the heart. Both of these conditions permanently damage the body.
Following are some other possible long-term effects of scarlet fever:
Scarlet fever is contagious and poses a risk to others. It is best not to share drinking glasses or utensils with someone who has a strep infection. Frequent hand-washing can also help prevent spread of this infection.