Understanding stroke — and what happens next
A stroke can happen suddenly and change life in an instant. Understanding what happened, recognising the warning signs and learning about possible causes can make a frightening subject feel a little less overwhelming.
Stroke Health Fitness combines trusted health information with lived experience of stroke, recovery and rebuilding an active life.
Explore this section
Stroke in Younger Adults → PFO & Stroke → AFib & Stroke → Preventing Another Stroke →What is a stroke?
A stroke happens when the blood supply to part of the brain is disrupted. Brain cells can become damaged because they are not receiving the oxygen and nutrients they need.
The effects can vary considerably depending on the part of the brain affected and the severity of the stroke. Movement, speech, vision, thinking, memory, balance, fatigue and emotions may all be affected.
Ischaemic stroke
An ischaemic stroke happens when a blood clot blocks blood flow to part of the brain. It is the most common type of stroke.
Haemorrhagic stroke
A haemorrhagic stroke happens when a blood vessel in or around the brain bursts and causes bleeding.
The experiences described on Stroke Health Fitness are personal experiences and should never be taken as a prediction of somebody else's recovery.
Recognising the signs of stroke
Stroke symptoms usually begin suddenly. In the UK, one of the simplest ways to remember the main warning signs is FAST.
Face
Has one side of the face dropped? Can the person smile normally?
Arms
Can both arms be raised and kept there, or is one weak or numb?
Speech
Is speech slurred, confused or difficult? Can the person understand you?
Time
If you notice possible stroke symptoms, call 999 immediately.
Stroke is a medical emergency
If you think you or somebody else may be having a stroke, call 999 immediately. Do not wait to see whether symptoms improve.
Stroke wasn't something I expected to happen to me
Before my stroke, I associated stroke mainly with older people. I was active, working and regularly exercising.
Then one evening my speech suddenly disappeared.
I was taken by ambulance to hospital in Sheffield, where scans and other investigations confirmed that I had suffered a stroke.
That experience completely changed my understanding of stroke. It also taught me that a person's appearance, fitness level or age cannot tell you the whole story.
The years afterwards involved further investigation, discovering a PFO, having it closed, later discovering atrial fibrillation/flutter and learning how to adapt the way I exercised.
That is my experience — not a template for somebody else's. SHF exists partly because I wanted the kind of practical, relatable information I struggled to find when I was going through it myself.
What is a TIA or 'mini stroke'?
A transient ischaemic attack, or TIA, happens when the blood supply to part of the brain is temporarily disrupted.
The symptoms can be the same as those of a stroke but may disappear after minutes or hours.
Symptoms disappearing does not make them safe to ignore
It is not possible at the start to know whether symptoms are being caused by a TIA or a full stroke. Sudden stroke symptoms should still be treated as an emergency.
Why do strokes happen?
Stroke does not have one single cause. Doctors may investigate a range of possible factors depending on the type of stroke and the individual.
Blood pressure
High blood pressure is one of the important modifiable risk factors for stroke.
Atrial fibrillation
AFib is an irregular heart rhythm that can increase the risk of stroke.
AFib & Stroke →Cholesterol & blood vessels
Cholesterol levels and changes within the blood vessels may contribute to stroke risk.
Diabetes
Diabetes is another condition associated with increased stroke risk.
Smoking & lifestyle
Smoking, excessive alcohol and some lifestyle factors can contribute to cardiovascular and stroke risk.
Other possible factors
Some strokes involve other medical conditions or structural factors. Appropriate investigations vary from person to person.
Understanding your own risk factors
After stroke, your healthcare team may discuss factors such as blood pressure, heart rhythm, cholesterol, diabetes, smoking, alcohol, activity levels and medicines.
Which factors matter most will be individual.
For some people, monitoring things such as blood pressure may form part of their wider healthcare plan.
Some stroke journeys raise different questions
Stroke can affect people at very different ages and for very different reasons. These guides explore some of the subjects that became particularly relevant during my own journey.
Stroke in Younger Adults
Stroke is often associated with older age, but it can happen in younger adults too — creating different questions around work, family, exercise and identity.
Explore younger stroke →PFO & Stroke
A patent foramen ovale is an opening between the upper chambers of the heart that remains after birth in some people. In selected circumstances, doctors may investigate its possible relevance after stroke.
Explore PFO & Stroke →AFib & Stroke
Atrial fibrillation is an irregular heart rhythm and an important recognised stroke risk factor.
Explore AFib & Stroke →Understanding the stroke is only the beginning
Once the immediate medical emergency has passed, many people begin asking a completely different set of questions about everyday life.
How do I start moving again?
Explore walking, gym work, strength, balance and returning to activity.
Exercise After Stroke →Why am I so tired?
Post-stroke fatigue can feel very different from ordinary tiredness.
Stroke Fatigue →How do I trust myself again?
Physical recovery and confidence do not always return at the same speed.
Confidence After Stroke →Trusted information matters
SHF aims to explain health information in straightforward language while recognising the limits of lived experience and fitness guidance.
Individual medical questions, symptoms, diagnosis, treatment and stroke risk should always be discussed with appropriate healthcare professionals.
Useful medical sources
Stroke Health Fitness provides general information and lived experience. It does not diagnose stroke, assess individual risk or replace medical, rehabilitation or mental-health care. Read the Medical & Fitness Disclaimer .
Understanding what happened can help you decide what comes next
You do not need to understand every part of stroke recovery at once. Start with the questions that matter to you now and explore SHF at your own pace.
Life after stroke. Moving forward.