| 'Brain fog' is one of those expressions which seems to slowly creep
into the general language.
Brain fog refers to the effect multiple sclerosis has on
a person's ability to think clearly.
Generally, it refers to the way processing of information becomes
interrupted and slowed as a result of
cognitive dysfunction caused by multiple sclerosis, although it
can really mean any of the range of cognitive deficits which can be
caused by multiple sclerosis.
More specifically, 'brain fog' refers to a type of clouded thinking
where the mind itself, the part which is used to accomplish tasks, becomes
clouded, as if there is a type of 'mental cataract' obscuring
'internal' vision.
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