What sort of disorder is fifth disease (slapped cheek syndrome)?

Slapped cheek: Erythema infectiosum is caused by parvovirus b19. Spread by respiratory droplets. Onset sudden bright erythema of cheeks (slapped cheeks). Followed by lacy rash on trunk and arms and legs. Complications rare, but can cause aplastic crisis in patients w hemolytic anemia. Few other symptoms in kids. Adults get headaches, body aches, and joint aches.

Viral infection: Causes cheeks to look bright red, hence the name slapped cheek syndrome. Also known as fifths disease, caused by a parvovirus. Causes some fever and malaise and sometimes upper respiratory symptoms. Tyelenol rest and hydration help alleviate aches. Resolves in 3-5 days.