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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]
The aura is usually followed, after a time varying from minutes to an hour, by the migraine headache. However, the migraine aura can manifest itself in isolation, that is, without being followed by headache. The aura can stay for the duration of the migraine; depending on the type of aura, it can leave the person disoriented and confused.
Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache, but can also occur acephalgically (without headache), also known as visual migraine or migraine aura. [4]
The difference is that oftentimes the aura is a warning sign that migraine pain is headed your way so it gives you an opportunity to initiate treatment and stop the migraine in its tracks ...
Familial hemiplegic migraine (FHM) is an autosomal dominant type of hemiplegic migraine that typically includes weakness of half the body which can last for hours, days, or weeks. It can be accompanied by other symptoms, such as ataxia, coma, and paralysis. Migraine attacks may be provoked by minor head trauma.
Photopsia; This is an approximation of the zig-zag visual of a scintillating scotoma as a migraine aura. It moves and vibrates, expanding and slowly fading away over the course of about 20 minutes.
Valproate and riboflavin were shown to have no effect on the triggering of cortical spreading depression though they are effective in migraine without aura. [16] Taken together, these results are compatible with a causal role of cortical spreading depression in migraine with aura, but not in migraine without aura. [citation needed]
Migraine without aura, or "common migraine", involves migraine headaches that are not accompanied by aura. Migraine with aura, or "classic migraine", usually involves migraine headaches accompanied by aura. Less commonly, aura can occur without a headache, or with a nonmigraine headache. Two other varieties are familial hemiplegic migraine and ...
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