Roseola

Also called Sixth disease, Exanthem subitum, or Roseola infantum

Roseola is a common illness caused by a virus that mostly affects babies and young children up to the age of 2. It usually starts with a high temperature for 3 to 5 days, then a rash of small pink or red spots appears, often on the chest, tummy and back, as the fever goes.

Last updated Nov 9, 2026

What it is

It usually gets better by itself within a week. Fluids, rest and fever medicines such as paracetamol or ibuprofen help.

The high temperature can sometimes cause a febrile seizure, which is frightening but usually not harmful.

Common signs

  • A sudden high temperature
  • A runny nose, sore throat or cough
  • Being irritable
  • A rash of small pink or red spots after the fever
  • Swollen eyelids

How it is usually diagnosed

  • Questions about symptoms and looking at the rash

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • GP notes
  • Temperature records

Questions to ask your doctor

  • When can my child go back to nursery?
  • How do I manage the fever?
  • Which signs mean I should get help?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A seizure, a rash that does not fade when a glass is pressed on it, or a child who is very drowsy or struggling to breathe: call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources