A stroke occurs when the blood supply to part of the brain is suddenly interrupted, either due to a blocked artery (ischaemic stroke) or a ruptured blood vessel (haemorrhagic stroke). Within minutes, brain cells begin to die due to a lack of oxygen, resulting in damage that can affect movement, speech, memory, and a wide range of other neurological functions.
The extent of long-term impairment depends on which area of the brain is affected and how quickly medical care is received. Common long-term consequences of stroke include:
- Hemiplegia or hemiparesis - partial or complete paralysis on one side of the body
- Aphasia - difficulty speaking, understanding language, reading, or writing
- Cognitive impairment - memory loss, reduced attention span, difficulty with problem-solving
- Dysphagia - difficulty swallowing, which can lead to aspiration and nutritional challenges
- Spasticity - muscle stiffness and involuntary contractions
- Fatigue and emotional changes - including post-stroke depression and anxiety
- Balance and coordination problems - increasing the risk of falls
These challenges can significantly limit independence and participation in daily life, placing a substantial burden on patients and their families. Whilst conventional rehabilitation can help patients regain some function, recovery often plateaus, leaving many individuals with permanent disability.