By Dr Syed Afzal Sohaib
12.04.21
Cardiologist
Blackouts (syncope) explained: possible causes, diagnostic tests and when to see a doctor
About half the UK population experience syncope (a blackout) at least once in their lifetime. Usually, the cause is unrelated to the heart. However, if blackouts are caused by the heart, they usually require urgent medical attention. Mr Azfal Sohaib explains the potential causes, when to see a doctor, and the tests you might undergo.