Roseola (roseola infantum) is a mild illness caused by
virus. It is generally harmless and is most common in
children 6 months to 2 years of age. It is rare after age 4.
Roseola is caused by two
common viruses. The viruses belong to the family of herpes viruses, but they do
not cause the cold sores or genital infections that herpes simplex viruses can
cause. They are spread through tiny droplets of fluid from the nose and throat
of infected people when they laugh, talk, sneeze, or cough. Roseola mostly
spreads from infected people who don't show symptoms.
child has roseola, keep him or her at home until there has been no fever for 24
hours and he or she is feeling better.
starts with a sudden high fever [39.4°C (103°F) to
40.6°C (105°F)] that lasts 2 to
3 days, although it can last up to 8 days. The rapid increase in temperature
may be the first sign of roseola and often occurs before you realize that your
child has a fever. The fever ends suddenly.
After the fever ends,
a rosy-pink rash may appear mostly on the trunk (torso), neck, and arms. The
rash is not itchy and may last 1 to 2 days.
In rare cases, a sore
throat, stomach ache, vomiting, and diarrhea occur.
A child with
roseola may appear fussy or irritable and may have a decreased appetite, but
most children behave almost normally.
Roseola is diagnosed
through a medical history and physical examination. The doctor often knows it's
roseola if your child had a fever and now has a distinct rash.
The roseola fever can be
managed with acetaminophen (such as Tylenol) or ibuprofen (such as Advil or
Motrin). Be safe with medicines. Read and follow all instructions on the label. If you give medicine to your baby, follow your doctor's advice about what amount to give. Do not give aspirin to anyone younger than 18 years
of age because of the risk of
The roseola rash will go
away without medical treatment.
generally is a harmless viral infection. Like any illness that can cause a
fever, it can cause
fever seizures, which are uncontrolled muscle spasms
and unresponsiveness that last 1 to 3 minutes. The fever seizure is caused by
the rapid increase in temperature in a short period of time. After a fever has
reached a high temperature, the risk of a seizure is probably over.
Contact the doctor if:
Other Works Consulted
American Academy of Pediatrics (2015). Human herpesvirus 6 (including roseola) and 7. In DW Kimberlin et al., eds., Red Book: 2015 Report of the Committee on Infectious Diseases, 30th ed., pp. 449–452. Elk Grove Village, IL: America Academy of Pediatrics.
Belazarian L, et al. (2008). Human herpesvirus 6 and human herpesvirus 7 sections of Exanthematous viral diseases. In K Wolff et al., eds., Fitzpatrick's Dermatology in General Medicine, 7th ed., vol. 2, pp. 1864–1866. New York: McGraw-Hill.
Belazarian LT, et al. (2012). Exanthematous viral diseases. In LA Goldman et al., eds., Fitzpatrick's Dermatology in General Medicine, 8th ed., vol. 2, pp. 2337–2366. New York: McGraw-Hill.
Cherry JD (2009). Roseola infantum (exanthem subitum). In RD Feigin et al., eds., Feigin and Cherry's Textbook of Pediatric Infectious Diseases, 6th ed., vol. 1, pp. 780–784. Philadelphia: Saunders Elsevier.
ByHealthwise StaffPrimary Medical ReviewerSusan C. Kim, MD - PediatricsBrian D. O'Brien, MD - Internal MedicineAdam Husney, MD - Family MedicineKathleen Romito, MD - Family MedicineSpecialist Medical ReviewerJohn Pope, MD - Pediatrics
Current as ofAugust 9, 2016
Current as of:
August 9, 2016
Susan C. Kim, MD - Pediatrics
& Brian D. O'Brien, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & John Pope, MD - Pediatrics
To learn more about Healthwise, visit Healthwise.org.
© 1995-2017 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.