The scenario is almost always the same: a baby between 6 months and 2 years of age runs a fever of 39-40°C for 3 days, with no obvious focus found on examination... The fever drops suddenly and pink spots starting on the torso appear. This is sixth disease, caused by the HHV-6 virus.

Symptoms — Typical Course

  1. Days 1-3: Sudden onset of high fever (the child's general condition is usually surprisingly good), mild irritability, sometimes diarrhea
  2. Drop in fever: Sudden, and it may even fall without medication
  3. Rash: Begins on the torso and spreads to the neck, arms and face; 2-5 mm pink, blanching spots; it is non-itchy and leaves no mark

Treatment

There is no specific treatment; it is a self-limiting viral illness:

  • Fever control (the right methods)
  • Plenty of fluids
  • Antibiotics are ineffective — it is a viral disease

When to See a Doctor?

  • If the fever lasts longer than 3 days, or if the rash looks different (does not blanch under pressure, is fluid-filled, or appears as bruising)
  • If a seizure develops during the high-fever phase (roseola is a common cause of febrile convulsions)
  • If the baby is younger than 3 months

Distinguishing rash-causing illnesses requires experience — hand, foot and mouth disease, measles and allergic rashes can be confused with one another.

📅 Book an appointment for a rash evaluation

This content is for informational purposes only; please consult your physician for diagnosis and treatment. — Dr. Hasan Keleş, Pediatrician