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Irlen syndrome and CFS?

Pyrrhus

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From the Irlen Institute, founded by Helen Irlen in 1983:
https://irlen.com/what-is-irlen-syndrome/

Irlen.com said:
What is Irlen Syndrome?

Irlen Syndrome (also referred to at times as Meares-Irlen Syndrome, Scotopic Sensitivity Syndrome, and Visual Stress) is a perceptual processing disorder. It is not an optical problem. It is a problem with the brain’s ability to process visual information. This problem tends to run in families and is not currently identified by other standardized educational or medical tests.

[...]

Symptoms of Irlen Syndrome

Light Sensitivity:
Bothered by glare, fluorescent lights, bright lights, sunlight and sometimes lights at night
Some individuals experience physical symptoms and feel tired, sleepy, dizzy, anxious, or irritable. Others experience headaches, mood changes, restlessness or have difficulty staying focused, especially with bright or fluorescent lights.

Reading Problems:
Poor comprehension
Misreads words
Problems tracking from line to line
Reads in dim light
Skips words or lines
Reads slowly or hesitantly
Takes breaks
Loses place
Avoids reading

Discomfort:
Strain and fatigue
Tired or sleepy
Headaches or nausea
Fidgety or restless
Eyes that hurt or become watery

Attention and Concentration Problems:
Problems with concentration when reading and doing academic tasks
Often people can appear to have other conditions, such as attention deficit disorder, and are given medication unnecessarily.

Writing Problems:
Trouble copying
Unequal spacing
Unequal letter size
Writing up or downhill
Inconsistent spelling

Other Characteristics:
Strain or fatigue from computer use
Difficulty reading music
Sloppy, careless math errors
Misaligned numbers in columns
Ineffective use of study time
Lack of motivation
Grades do not reflect the amount of effort

Depth Perception:
Clumsiness
Difficulty catching balls
Difficulty judging distances
Additional caution necessary while driving

Distortions:
Words on the page lack clarity or stability; i.e., may appear to be blurry, moving, or disappear
It sounds like this might apply to autism, brain injury, or other conditions...
 

xebex

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I looked into this a lot when I was much sicker I had pretty much all the symptoms but over time it has gone away, it comes back in a bad crash and I have found avoiding glutamate helps hugely.