Understanding Stroke: Types, Symptoms, Treatment & Recovery
Stroke is a medical emergency. Every minute matters.
Every year, thousands of Australians experience a stroke. It can happen to anyone—young or old—and often occurs without warning. The faster a stroke is recognised and treated, the greater the chance of survival and recovery.
Understanding the different types of stroke, recognising the warning signs, and knowing what to do could save a life.
What Is a Stroke?
A stroke occurs when the brain is suddenly deprived of oxygen and nutrients due to either:
A blocked blood vessel (ischaemic stroke), or
Bleeding into the brain (haemorrhagic stroke).
Brain cells begin to die within minutes of losing their blood supply. Unlike many other tissues in the body, the brain has very little ability to regenerate damaged neurons, making rapid medical treatment essential.
A useful phrase often used in stroke medicine is:
"Time is Brain."
Every minute a stroke remains untreated, millions of brain cells are lost.
The Three Main Types of Stroke
1. Ischaemic Stroke (Approximately 85% of strokes)
This is the most common type of stroke.
An ischaemic stroke occurs when an artery supplying blood to the brain becomes blocked by a blood clot. The blockage prevents oxygen-rich blood from reaching brain tissue, causing cells to become damaged or die.
Common Causes
Blood clots forming within narrowed arteries
Clots travelling from the heart (commonly due to atrial fibrillation)
Cholesterol plaque build-up (atherosclerosis)
Diabetes
Smoking
High blood pressure
High cholesterol
Symptoms
Symptoms usually begin suddenly and may include:
Weakness or paralysis on one side of the body
Facial drooping
Slurred speech
Difficulty speaking or understanding language
Sudden vision changes
Loss of coordination
Numbness
Confusion
Emergency Treatment
Treatment aims to restore blood flow as quickly as possible.
Depending on the patient and timing, doctors may use:
Clot-busting medications (thrombolysis)
Mechanical thrombectomy (removal of the clot using specialised catheters)
These treatments are highly time-sensitive and are most effective when delivered within hours of symptom onset.
2. Haemorrhagic Stroke
A haemorrhagic stroke occurs when a blood vessel ruptures, causing bleeding within or around the brain.
Although less common, this type is generally more severe.
Common Causes
Long-standing high blood pressure
Brain aneurysms
Arteriovenous malformations (AVMs)
Head trauma
Blood-thinning medications
Symptoms
People often experience:
A sudden severe headache ("the worst headache of my life")
Vomiting
Drowsiness
Reduced consciousness
Seizures
Weakness
Speech difficulties
Vision changes
Treatment
Treatment focuses on:
Controlling the bleeding
Reducing pressure inside the skull
Managing blood pressure
Sometimes emergency brain surgery
Recovery often takes longer because the surrounding brain tissue may also be affected by swelling.
3. Transient Ischaemic Attack (TIA) – The "Mini Stroke"
A transient ischaemic attack occurs when blood flow to part of the brain is temporarily interrupted.
Unlike a stroke, symptoms completely resolve, often within minutes.
Because symptoms disappear, many people ignore them.
This can be a dangerous mistake.
A TIA is often the body's warning that a major stroke may be imminent.
Symptoms
Symptoms are identical to a stroke and may include:
Temporary facial drooping
Weakness
Numbness
Speech difficulties
Temporary vision loss
Dizziness
Even if symptoms last only a few minutes, immediate medical assessment is essential.
Recognising a Stroke: Remember FAST
The simplest way to identify a stroke is to remember FAST.
F – Face
Ask the person to smile.
Does one side of the face droop?
A – Arms
Ask them to raise both arms.
Does one arm drift downward?
S – Speech
Is their speech slurred?
Can they repeat a simple sentence?
T – Time
Call emergency services immediately.
Do not wait to see if symptoms improve.
Other Stroke Symptoms
Not every stroke presents with facial drooping or arm weakness.
Additional warning signs include:
Sudden vision loss
Double vision
Severe dizziness
Difficulty walking
Loss of balance
Confusion
Sudden numbness
Difficulty swallowing
A sudden severe headache
If symptoms appear suddenly, seek emergency medical care immediately.
Why Stroke Symptoms Differ
Every stroke is unique.
The symptoms depend on which part of the brain has been affected.
Left Side of the Brain
Often responsible for language and logical thinking.
People may experience:
Right-sided weakness
Difficulty speaking
Difficulty understanding language
Reading and writing problems
Right Side of the Brain
Often controls spatial awareness and attention.
People may experience:
Left-sided weakness
Poor awareness of one side of their body
Poor judgement
Difficulty recognising faces or objects
Brainstem Stroke
Although less common, brainstem strokes can be life-threatening.
Symptoms may include:
Double vision
Difficulty swallowing
Severe dizziness
Loss of coordination
Paralysis
Breathing difficulties
Cerebellar Stroke
The cerebellum controls balance and coordination.
Symptoms often include:
Vertigo
Severe dizziness
Unsteady walking
Vomiting
Poor coordination
Long-Term Effects of Stroke
Recovery varies enormously between individuals.
Some people recover almost completely.
Others require months—or years—of rehabilitation.
Potential long-term complications include:
Muscle weakness
Paralysis
Difficulty walking
Poor balance
Increased falls risk
Muscle stiffness (spasticity)
Chronic pain
Fatigue
Memory problems
Difficulty concentrating
Speech difficulties
Swallowing problems
Anxiety
Depression
Emotional changes
Reduced independence
Fortunately, the brain possesses an incredible ability known as neuroplasticity.
With appropriate rehabilitation, healthy areas of the brain can adapt and form new pathways to regain lost function.
Stroke Rehabilitation
Recovery is rarely about one treatment alone.
Successful rehabilitation often involves a multidisciplinary team.
This may include:
Physiotherapists
Chiropractors (where appropriate for musculoskeletal rehabilitation after medical clearance)
Occupational therapists
Speech pathologists
Exercise physiologists
Dietitians
Psychologists
Rehabilitation physicians
The rehabilitation program is tailored to the individual's goals, functional limitations, and stage of recovery.
Can Stroke Be Prevented?
Many strokes are preventable.
Managing cardiovascular health dramatically reduces risk.
Lifestyle strategies include:
Controlling blood pressure
Managing diabetes
Lowering cholesterol
Exercising regularly
Maintaining a healthy weight
Eating a balanced diet
Quitting smoking
Limiting alcohol intake
Treating atrial fibrillation
Getting regular health checks
When Every Minute Counts
Stroke is one of the leading causes of disability worldwide.
The encouraging news is that outcomes continue to improve because treatments are becoming faster and more effective.
The single most important factor remains recognising the symptoms early.
If you suspect someone is having a stroke—even if the symptoms disappear—call emergency services immediately.
Quick action could save brain tissue, preserve independence, and ultimately save a life.
Key Takeaways
Around 85% of strokes are caused by a blocked blood vessel (ischaemic stroke).
Haemorrhagic strokes occur when a blood vessel ruptures and often require urgent specialist care.
A transient ischaemic attack (TIA) is a warning sign that should never be ignored.
Remember FAST: Face, Arms, Speech, Time.
Stroke rehabilitation is most successful when treatment begins early and involves a multidisciplinary team.
Many stroke risk factors are modifiable through healthy lifestyle choices and regular medical care.
If you think someone is having a stroke, don't wait. Act FAST and call emergency services immediately.