Which body part does the parvovirus B19 rash start from before spreading?

Parvovirus B19, known for causing fifth disease or "slapped cheek syndrome," typically presents with a distinctive rash that progresses in a characteristic pattern. The rash often starts on the cheeks, giving them a bright red appearance, but it may also begin with subtle symptoms in other areas before becoming more widespread. Specifically, the rash usually begins behind the ears and on the face before progressing to other parts of the body, particularly the trunk and extremities.

Understanding the origin of the rash is important for both diagnosis and management. Starting behind the ears aligns with its typical progression and pattern of spread in infected individuals. This knowledge is crucial in recognizing the illness in a clinical setting, particularly in pediatric patients who are more susceptible to such viral infections.