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Visual snow

'Visual Snow' May Be a Distinct Clinical Entity
"Visual snow is almost always associated with additional visual symptoms. It therefore represents a unique clinical syndrome – the visual snow syndrome," he said at the annual meeting of the American Headache Society. "It is distinct from visual aura in migraine; migraine with and without aura are common comorbidities, but we don’t actually know at the moment what is the pathological link between those two conditions. And the intake of illicit drugs is not relevant."
Dr. Schankin went one step further, proposing new diagnostic criteria for the visual snow syndrome: visual snow plus at least three additional visual symptoms out of nine identified in the study, in the context where these symptoms are not consistent with typical migraine aura and cannot be attributed to some other disorder.
 
 "I suspect it’s migrainous because most of these people have migraines. But it’s not aura. I don’t know really what it is. It’s incredibly frustrating because nothing works. You can try every antiepileptic known to mankind, and nothing works. So I agree that this is something we need to pay attention to and help these people."
"Patients are commonly given the diagnosis of persistent migraine aura or a posthallucinogen perceptual disorder, especially after LSD intake," he noted.
He and his coinvestigators studied members of an online support group for visual snow (Eye on Vision). In the first part of the study, they analyzed data from an Internet survey among 120 patients that asked about visual symptoms. They were 26 years old on average and about two-thirds were men.
Results showed that in addition to visual snow, nearly all patients reported other visual symptoms, such floaters (73%); persistent visual images (63%); difficulty seeing at night (58%); tiny objects moving on the blue sky (57%); sensitivity to light (54%); trails behind moving objects (48%); bright flashes (44%); and colored swirls, clouds, or waves when their eyes were closed (41%).

Well I honestly never associated those other visual symptoms as part of the visual snow... more like part of the migraines or part of a persistent aura... granted there did seem to be a lot of weirdness there and also all of that was atyptical of my normal right before the migraine visual aura that presented in a very classic way and actually has responded to medication. The visual snow has never been changed at all by medication. But to think that it is a seperate condition comorbid or connected to migraines going on literally gives me a headache... I seriously do not need any more comorbid conditions.
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