Visual Processing

DHagen

Senior Member (Voting Rights)
Problems with vision, and, more specifically, with the brain processing visual signals, seem to be common with ME/CFS, though I have the impression they tend to receive less attention than many of our other symptoms. A quick search through a handful of forums produces a number of threads in which unusual symptoms are shared, a few users will immediately pipe up with “I thought I was the only one” and then the thread dies because, well, that’s what always happens – it’s a bizarre, debilitating symptom that no one recognizes, no one can quantify, most struggle to even describe it, and there’s whatever to be done about it.

Common elements, all of which I recognize in myself, seem to include:

difficulty with high-contrast environments​

problems with depth perception, sometimes including visual-flattening, in which the brain has difficulty mapping three-dimensional space (I also have an issue where my brain struggles to process illusory three-dimensional space, as when looking at a two-dimensional image)​
Problems processing reflections and glare​
a sense that the eyes are not focusing properly, even when a “sharp” image is actually being produced by the eyes​
being told by the ophthalmologist (and neurologist) that they can’t find anything wrong – lots of people with ME actually seem to have excellent vision according to various tests​

I struggle with all of these, and more. As time goes on, I find that I also struggle enormously with creating mental images. Over the last year or so, I have become aware of developing partial aphantasia. The degree varies depending on the day, though the overall trend, as with everything else, is toward the severe. On a good day, I can still create some mental images, but concentrating on them feels physically exhausting and can generate PEM.

My question is whether there are any other known conditions that consistently produce similar symptoms when it comes to visual processing and mental imagery – I know and have known quite a few people whose cognition has been severely altered and impaired as a result of Parkinson’s, Lupus, CTE, stroke, Alzheimer’s, etc., and none have described experiencing anything quite like what I do, though one person I know with Lupus has some similarities (they attribute them to migraine). This is obviously a limited sampling, so perhaps I am just ignorant.

My apologies if this has been asked and discussed before.

TLDR: Some people with ME/CFS have significant difficulties with visual processing, often in ways that seem nearly unique. Are there other conditions that manifest similar symptoms?
 
You've probably come across my threads here. I have quite severe visual processing problems. I have a bad case of 'visual snow syndrome' which is much more than seeing static. The most disabling symptom for me is afterimages (palinopsia). It's another condition that is not well understood and is poorly named: https://www.visualsnowinitiative.org/

RE mental images. The only issue I've had with this is when I would have these horrendous 'neurocrashes' as I now call them. This was back in 2018 when I was trying to stay in work and making myself much worse. I would go to bed and it was like my brain had been hijacked. I would get images thrown up in my conscious but I couldn't control it. It really was like a seizure looking back, but I was completely still, no adrenaline, no raised hrart rate. These episodes only ever happened at night before sleep. I have also written about this here on the forum.

These issues all appeared when my ME was getting worse. I have no doubt that it's all connected.
 
You've probably come across my threads here. I have quite severe visual processing problems. I have a bad case of 'visual snow syndrome' which is much more than seeing static. The most disabling symptom for me is afterimages (palinopsia). It's another condition that is not well understood and is poorly named: https://www.visualsnowinitiative.org/
Yes! I completely forgot to include afterimages. I've had some degree of VSS for as long as I can remember (that is, since at least early childhood, decades before my earliest recalled ME symptoms), but the after images really ramped up around the time of my deterioration. It's been a bit since I have read much about it, but I see now (I may have known this and forgotten) that some sufferers also connect VSS with tinnitus, which is interesting to note.

RE mental images. The only issue I've had with this is when I would have these horrendous 'neurocrashes' as I now call them. This was back in 2018 when I was trying to stay in work and making myself much worse. I would go to bed and it was like my brain had been hijacked. I would get images thrown up in my conscious but I couldn't control it. It really was like a seizure looking back, but I was completely still, no adrenaline, no raised hrart rate. These episodes only ever happened at night before sleep. I have also written about this here on the forum.

These issues all appeared when my ME was getting worse. I have no doubt that it's all connected.
I don't think recall reading about this side of your experience, but I am grateful to you for sharing it again. This too, sounds familiar - I had something similar around this time last year. It was accompanied by "silent" migraines throughout the day and then at night my brain would enter a sort of manic hypnagogic state. In retrospect, I have occasionally wondered if it wasn't the death throes of my visual cortex, or at least some portion of it.
 
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