How is mild cognitive impairment (MCI) defined?

Updated: Apr 22, 2019
  • Author: Sonal Mehta, MD; Chief Editor: Jasvinder Chawla, MD, MBA  more...
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Ronald C. Petersen postulated that the defining element of MCI is a single sphere of slowly progressive cognitive impairment that is not attributable to motor or sensory deficits and to which other areas of involvement may eventually be added, before social or occupational impairment supervenes (because this occurrence marks the onset of dementia). [1]

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