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A migrainous infarction is a rare type of ischaemic stroke which occurs in correspondence with migraine aura symptoms. [1] Symptoms include headaches, visual disturbances, strange sensations and dysphasia, all of which gradually worsen causing neurological changes which ultimately increase the risk of an ischaemic stroke. [2]
If the stroke affects the parts of your brain involved in vision, that can lead to problems noticing things in parts of your visual field, or figuring out exactly what you are looking at.
Similarly, a person who has a stroke to the right occipital lobe will have the same visual field defect, usually more congruent between the two eyes, and there may be macular sparing. A stroke on the right side of the brain (especially parietal lobe), in addition to producing a homonymous hemianopsia, may also lead to the syndrome of ...
visual snow syndrome; Vitreous shrinkage or liquefaction, which is the most common cause of photopsia, causes a pull in vitreoretinal attachments, irritating the retina and causing it to discharge electrical impulses. These impulses are interpreted by the brain as flashes.
Some risks associated with stroke are hypertension (high blood pressure), atrial fibrillation (an irregular heartbeat) and smoking, according to the US Centers for Disease Control and Prevention.
Cerebral infarction, also known as an ischemic stroke, is the pathologic process that results in an area of necrotic tissue in the brain (cerebral infarct). [1] In mid to high income countries, a stroke is the main reason for disability among people and the 2nd cause of death. [2]
Stroke is the most common source of damage for a right hemisphere damage. The stroke for this disorder occurs in the right hemisphere of the brain. Other etiologies that cause right hemisphere damage include: trauma (traumatic brain injury), disease, seizures disorders, and infections.
1–17% of patients experience seizures. 8–43% of patients show neurologic problems, especially visual disturbances, but also hemiplegia, ataxia, dysarthria, aphasia, and numbness. [1] These neurologic issues typically disappear within minutes or a few hours; more persistent symptoms may indicate a stroke. [1]
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