Roseola infantum, also known as baby roseola, is a common acute febrile rash disease, mainly caused by human herpesvirus type 6 or 7. Its characteristic is that after three to five days of fever, the fever suddenly drops and the skin develops rose-pink maculopapular rashes. As the rash appears, the condition alleviates and recovery can be quick without complications. The rash in roseola infantum is caused by viral infection, not due to allergies, so the majority of cases do not involve itching. A very small portion might experience mild skin itching, but no special treatment is necessary as the symptoms generally subside within one or two days.