26th April 2024

A 5-year-old girl presents with a high fever of 39.2°C for three days, followed by the sudden appearance of a pinkish-red rash on her trunk and neck as the fever subsides.

A 5-year-old girl presents with a high fever of 39.2°C for three days, followed by the sudden appearance of a pinkish-red rash on her trunk and neck as the fever subsides. She has been irritable but is otherwise in good health. She attends a local primary school and there have been recent reports of similar symptoms among other children. On examination, the rash is maculopapular and not itchy. There are no other significant findings.

Which is the most likely diagnosis?