Hi,
Any one would have problem while reading in a moving vehicle and people can feel pain due to trying to over concentrate.
I am getting your point.
If you are so concious about this then we can get an mri done but before that try improve your sitting position,get your vision checked,get your b.p and rbs checked and tell me if any problem.
What is your job profile ?
Any other aggrivating or relieving factor. ...
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