A stroke happens when the blood supply to part of the brain is cut off. Without blood, brain cells start to die. There are around 100,000 strokes in the UK each year.
Types of stroke
- ischaemic stroke, caused by a blood clot blocking an artery. This is the most common type
- haemorrhagic stroke, caused by bleeding in or around the brain
- transient ischaemic attack (TIA) or mini stroke, where the blood supply is blocked for a short time and symptoms go within 24 hours
Effects of a stroke
The effects depend on which part of the brain was affected. They can include:
- weakness or paralysis on one side of the body
- problems with speech and language (aphasia) or swallowing
- tiredness (fatigue), which is very common
- problems with memory, thinking and concentration
- changes to sight
- emotional changes, such as depression, anxiety or mood swings
What raises the risk?
High blood pressure, atrial fibrillation, smoking, diabetes, high cholesterol, being overweight, drinking too much alcohol and not being active. Most strokes can be prevented.
Read about stroke treatment and rehabilitation.
Common questions
What is a mini stroke (TIA)?
A transient ischaemic attack (TIA) has the same signs as a stroke, but they go away within 24 hours. It is a warning that you are at high risk of a stroke. Call 999 even if the symptoms go away, and you should be seen by a specialist within 24 hours.
Can you recover from a stroke?
Many people make a good recovery. The brain can relearn skills, especially in the first few months, but recovery can carry on for years. Some people are left with long-term disabilities.
Sources we used
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