How is fifth disease diagnosed?
Your doctor can usually tell if you have fifth disease by examining the pattern of the rash. A blood test also can be used to check for the antibody to parvovirus. An antibody is a type of protein that your body makes in response to infections. While the blood test is not usually needed, your doctor may want to do it if you have other conditions that might put you at greater risk for complications from fifth disease.
Written by familydoctor.org editorial staff