There are many different types ofstroke.
Cause of Tissue Damage
Strokescan be brought on by a variety of factors.
Often the causes can help determine the prognosis as well as the best method of treatment.
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However, an embolus may also consist of a fat globule or air bubble.
It may also be sparked by a thrombus, usually as a result ofcerebrovasculardisease.
What Is a Watershed Stroke?
A watershed stroke may occur in regions of the brain that are supplied bytiny arteries.
Hemorrhagic
Bleeding of a blood vessel in the brain causes ahemorrhagic stroke.
This often happens when arteries in the brain stiffen and break with high blood pressure.
Sometimes the rupture of abrain aneurysmcauses bleeding.
Extreme changes in blood pressure may trigger the rupture of a brain aneurysm.
Cortical Stroke
Acortical strokeaffects the cerebral cortex, which is important for higher cognitive functions.
It also contains areas that are responsible for processing sensory information and controlling voluntary movement.
Occasionally, loss of bladder or bowel control may result.
Parietal Cortex
The parietal cortex is involved with integration of sensation and language.
People with aparietal strokeoften display impaired sensation or trouble with theproduction of speech.
Occipital Cortex
The occipital cortex integrates vision.
Temporal Cortex
The temporal cortex is involved with hearing and language.
People who have had atemporal lobe strokeoften have troubleunderstanding written or spoken language.
This includes structures like the basal ganglia, internal capsule, and subcortical loops connecting the cortex.
A stroke affecting the basal ganglia can result in problems with language and speech.
Brainstem
Abrainstem strokecan cause a wide variety of signs and symptoms.
It may cause weakness, sensory changes, or trouble speaking.
Additionally, the brainstem controls breathing and regulates the heart rate.
A brainstem stroke may affect vital functions, even when a relatively small area is affected.
Blood Vessel
Some strokes are named after the blood vessel that was blocked or bleeding.
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