Associate Professor Mark Mackay is a paediatric neurologist and director of the stroke program at the Royal Children’s Hospital, Melbourne, Australia. He leads the childhood stroke research Group at the Murdoch Children’s Research Institute. His research focuses on understanding the causes of and consequences of childhood stroke, and improving accuracy and timeliness of stroke diagnosis. He is on the executive committee of the International pediatric stroke study and an invited stroke expert on the Global Burden of Diseases Study. He chaired the development of national best-practice guidelines for the investigation and acute management of childhood stroke.