Brain stiffness: Brain concentration is like muscle exercise. Uses energy, and focusing tenses neck muscles/eye muscles which could cause stiffness, tightness, headaches. Computer work causes eye strain because of the nature of the screen. Get a glare protective screen cover,break very 45 minutes in any work and shake out . An MRI with no contrast is more definitive than CT. Don't worry.
Answered 8/25/2014
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