<unk>  is a disease of infants. It is characterized by an abrupt rise in body temperature to as high as 40°C (104°F) followed by a rapid drop to normal within the next 2–4 days which coincides with the appearance of an erythematous maculopapular skin rash that persists for 1–3 days. It is typically a benign disease which resolves without sequalae.
Roseola
Ebola
Measles
Mumps
Cat scratch fever
Smallpox
Chickenpox
Babesiosis