erythema infectiosum
Pronunciation: eh-ri-THEE-mah in-fek-shee-OH-sum
Viral exanthem caused by parvovirus B19, characterized by 'slapped cheek' appearance and lacy rash.
Full Definition
Erythema infectiosum, also known as fifth disease, is a common childhood viral exanthem caused by human parvovirus B19. The condition typically presents with a characteristic 'slapped cheek' erythematous facial rash followed by a lacy, reticular rash on the trunk and extremities. Most children recover without complications, but the infection can cause serious problems in immunocompromised patients and pregnant women. The condition is named 'fifth disease' because it was the fifth of six classical childhood exanthems to be described historically.
Usage
Usage note: Formal medical term preferred over 'fifth disease' in professional documentation. Note Latin pronunciation.
In Context
- "The classic presentation of erythema infectiosum includes the pathognomonic 'slapped cheek' appearance." — pediatric infectious disease consult
- "Use the formal term 'erythema infectiosum' in medical documentation rather than 'fifth disease'." — clinical writing style guide