The diagnostic term fifth disease causes a slight red skin flush similar to:

The diagnostic term fifth disease causes a slight red skin flush similar to 3 day measles-rubella. The fifth disease is a mild rash illness caused by parvovirus B19, usually more common to children than in adults. The disease spreads through respiratory secretions such as saliva, sputum, or nasal mucus, when an infected person coughs or sneezes.