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Roseola infantum, more often referred to simply as roseola, is one of the very common mild viral illnesses that can cause a temperature and rash in babies and young children (aged between six months and three years). Roseola develops around five to 15 days after contact and usually doesn’t cause problems for the child, although sometimes it can make the child feel unwell.

The high temperature and fine, raised, red skin rash can last from a few hours to three to five days.

Roseola is also known as sixth disease or exanthema subitum. The symptoms include:

  • The child develops a high temperature of up to 40ºC (possibly higher)
  • which usually lasts for a few hours
  • but may last three to five days. As the temperature falls
  • a raised red rash appears – first on the body neck
  • later on the face arms legs

The rash lasts from a few hours to one or two days. Roseola may also cause a fever without the rash. Children with roseola recover fully, usually within a week. Roseola is caused by one of the viruses in the herpes group, but this virus can’t cause other herpes infections, such as.

It is not known how the virus is spread, although spread via saliva is suspected. Roseola is most infectious while the child is unwell – from the start of the fever and including the time before the rash appears. Most children have been in contact with this virus by the time they are three years old.

Treatment for roseola includes:

  • over 38.5 ºC with paracetamol
  • following dosage instructions for your child’s age

Offer the child lots of water and drinks

It is best to keep any unwell child home from childcare or creche because the sick child needs extra attention, and the other children at the childcare centre or creche shouldn’t be exposed to the infection.

Roseola usually doesn’t cause any problems

Some of the complications may include:

  • can lead to ear infections. (fits triggered by a high fever)
  • as the child’s temperature may rise very quickly

They rarely cause any ongoing problems

Other complications of roseola are very uncommon

If you are concerned about your child, always see your doctor for information, advice and treatment. You should also see your doctor if you are pregnant and your child, or someone else who you are in close contact with, has a rash illness. This is to make sure that you are not at risk of rubella infection or parvovirus B19 infection, as these can be difficult to distinguish from roseola without laboratory tests.

Tel. About roseola infantum Symptoms of roseola Roseola is a member of the herpes family cold sores Treatment for roseola Treat a fever Complications of roseola The rash can sometimes be confused with measles or rubella Sometimes, roseola The major problem is the possibility of febrile convulsions See your doctor Where to get help Your GP (doctor) Dermatologist Maternal and child health nurse Pharmacist The Maternal and Child Health Line 132 229.

Key Points

  • Roseola may also cause a fever without the rash Roseola usually doesn’t cause any problems They rarely cause any ongoing problems
  • Other complications of roseola are very uncommon
  • If you are concerned about your child, always see your doctor for information, advice and treatment