Fever then rash: could it be roseola?

Roseola commonly causes a high fever followed by a pinkish rash as the fever improves, especially in young children. The rash often begins on the trunk and may spread to the neck or limbs. A child can look brighter when the rash appears, but fever-related warning signs still require attention.

Roseola is a viral illness, and diagnosis is usually based on the sequence of symptoms and examination. Congestion, irritability or swollen glands can occur before the rash. The rash is often flat or slightly raised and may fade with pressure, but other infections can look similar. Chickenpox usually develops itchy spots that become fluid-filled, while cellulitis is more often a localised, warm and tender area.

Offer plenty of fluids and normal feeds, allow extra rest, and use light clothing. Check temperature and behaviour periodically. Use only age-appropriate fever medicine according to professional or package directions, and do not combine products with the same active ingredient. Handwashing and avoiding shared utensils can reduce spread of viral infections. Keep the child home while feverish and follow local childcare guidance.

Get urgent help for a seizure, breathing difficulty, confusion, severe headache, stiff neck, persistent vomiting, dehydration, or a rash that does not fade when pressed. Arrange review if the fever lasts longer than expected, returns after improvement, the child is not drinking, or the rash is painful, blistered, bruised-looking or rapidly spreading.

Does the timing fit roseola or another infection? Is the child safe to return to nursery? How should we manage fever overnight? What should we do if a fever-related seizure occurs?