Syncope is defined as transient loss of consciousness due to cerebral hypoperfusion; it is a common problem which will affect up to 20% of children by the end of adolescence. The cause is usually benign, but it is important not to miss syncope due to a cardiac cause. In this podcast, Dr Toni Hazell talks to Professor Lesley Kavi about the different causes of syncope in children and young adults. They also discuss how to diagnose and manage these conditions in primary care.