AKT-0571
A 14-month-old boy presents with eye-rolling followed by generalised shaking of the limbs for three minutes. He has had a cold for two days, but became very warm this morning just prior to the episode.
He has no previous history of note, and had a full term normal delivery with no neonatal complications. His immunisations are up to date. There is no family history of note.
On examination he is alert though febrile at 39.2°C, with flushed cheeks. He has a runny nose. Respiratory rate is 22/min and heart rate 130/min. His chest is clear and urinalysis is negative.
What is the most likely diagnosis?