Roseola

 ICD9        = 057.8|

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Exanthemsubitum (meaning sudden rash), also referred to as roseola infantum (or rose rash of infants), sixth disease and (confusingly) baby measles, is a benign disease of children, generally under two years old, whose manifestations are usually limited to a transient rash ("exanthum") that occurs following a fever of about three day's duration.

Until recently, its cause was unknown: it is now known to be caused by two human herpesviruses, HHV-6 and HHV-7, also called Roseolovirus.

Despite the fact that it is occasionally called baby measles, it is caused by a different virus from measles, which is more severe.

The name sixth disease stems from the fact that when diseases causing childhood rashes were enumerated, it was the sixth listed.

Clinical features of exanthem subitum

Typically the disease affects a child between six months and three years of age, and begins with a sudden high feverof 102-104 degrees Fahrenheit (39-40 degrees Celsius). This can cause, in some cases, febrile convulsions (also known as febrile seizuresor fever fits) - due to the suddenness of the rise in body temperature, but in many cases the child appears and acts normal. After a few days the fever subsides and just as the child appears to be recovering, a red rash appears. This usually begins on the trunk, spreading to the limbs but usually not affecting the face. It disappears again in a matter of hours to a day or so.

In contrast, a child suffering from measleswould usually be more unwell, with symptoms of conjunctivitisand a cough, and their rash would affect the face and last for several days.

Vaccines and treatment

There is no specific vaccineagainst or treatment for, exanthem subitum, and most children with the disease are not seriously unwell. The child with fevershould be given plenty of fluids to drink, and acetaminophenor ibuprofento reduce the temperature. He or she should also be kept more lightly clothed than normal if he or she is very hot. The rash is not particularly itchy and needs no special lotions or creams.

It is likely that many children catch exanthem subitum "subclinically"; in other words, they show no outward sign of the disease. Others may be unwell enough that a doctor's opinion is required to confirm the diagnosis, and particularly to rule out other more serious infections, such as meningitisor measles. In case of febrile seizures, medical advice is essential.

External links

• MedlinePlus
• Links to roseola pictures (Hardin MD/Univ of Iowa)

fr:Roséole it:Sesta Malattia nl:Zesde ziekte pt:Roséola sv:Tredagarsfeber

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Roseola Wikipedia article Roseola.