Roseola is a common childhood virus that is caused by the human herpes virus 6 and occasionally human herpes virus 7. The child, typically 2 years of age or younger, will experience a sudden high fever, often over 103 degrees F, that lasts for 3 to 5 days. Sore throat, runny nose, cough and swollen lymph nodes may accompany the fever.
HFMD is a common viral illness that kids will often get by 5 years of age. It starts with a fever, sore throat, and loss of appetite. Then, a few days after the fever begins, sores appear around the mouth. These are painful, and usually begin in the back of the mouth.
Roseola is a contagious viral illness that is marked by a high fever and a rash that develops as the fever decreases. What causes roseola? Roseola is likely caused by more than one virus, but the most common cause is the human herpesvirus 6 (HHV6).