26th April 2024

A 3-year-old boy presents with a barking cough and hoarseness for two days.

A 3-year-old boy presents with a barking cough and hoarseness for two days. His mother reports that he developed a low-grade fever yesterday. This evening, he seems to have difficulty breathing and his cough has worsened. On examination, you note stridor at rest. His immunisations are up to date.

Which is the most likely diagnosis?