What Is Stroke?

A stroke happens when blood flow is disrupted in a part of the brain.1 The resulting lack of oxygen damages brain cells, which can have potentially disabling effects on the patient.2

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There are two main types of stroke, ischaemic and haemorrhagic, while there is a third more minor stroke called a transient ischaemic attack (TIA).2 An ischaemic stroke can be caused by a blood clot that formed in the heart and travelled to the brain or by atherothrombosis.3 Conversely, haemorrhagic strokes are caused by a rupture in the blood vessels, resulting in bleeding within the brain.2 A TIA is a blood clot that temporarily interrupts blood flow in the brain and is a risk factor for future strokes that could cause more serious damage.1