Click here for a PDF “print-friendly” version of this fact sheet

What is it?

Roseola (exanthem subitum) is caused by a virus. The infection occurs in children under 4 and is most common before 2 years. It is rare in children older than 4 years.

What are the symptoms?

Symptoms include a sudden fever lasting 3-5 days followed by a rash on the body and face that lasts for 24-48 hours. The rash consists of small pink spots and usually fades quickly. Most children are not very sick during the fever stage of the infection. In some children the fever is high (sometimes as high as 41°C) and causes febrile seizures; however, other complications of roseola are rare.

How is it spread?

Roseola is spread from person to person but it is unknown how. It takes about 10 days to develop symptoms after being in contact with someone who has roseola. Roseola is not very contagious and usually goes away without any treatment.

What precautions can I take?

• Consult a physician if your child has a fever and rash.
• Your child may continue attending childcare or school if he or she is well enough to take part in the activities.
• Good hand washing is recommended.
• There is no specific treatment for roseola but you can treat the fever and keep your child comfortable.

For more information please call Public Health at 519-376-9420 or 1-800-263-3456.