Strokes are serious medical emergencies that require immediate attention. They are caused by blood flow to the brain being temporarily cut off. In most cases this is due to a blood clot – in what is known as an ischaemic stroke.
This is the most common type of stroke, accounting for around 85 percent of cases.
They can also be caused by a blood vessel bursting – known as a haemorrhagic stroke.
The signs that someone is experiencing a stroke are fairly well known, with the acronym FAST (face, arms, speech, time) used to explain what should be done in that moment.