Mild cognitive impairment (MCI)

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Symptoms

By Mayo Clinic staff

Your brain changes as you grow older just like the rest of your body. Many people notice gradually increasing forgetfulness as they age. It may take longer to think of a word or to recall a person's name.

But consistent or increasing concern about your mental performance may suggest MCI. Cognitive issues may go beyond what's expected and indicate possible MCI if you experience any or all of the following:

  • You forget things more often.
  • You forget important events such as appointments or social engagements.
  • You lose your train of thought or the thread of conversations, books or movies.
  • You feel increasingly overwhelmed by making decisions, planning steps to accomplish a task or interpreting instructions.
  • You start to have trouble finding your way around familiar environments.
  • You become more impulsive or show increasingly poor judgment.
  • Your family and friends notice any of these changes.

If you have MCI, you may also experience:

  • Depression
  • Irritability and aggression
  • Anxiety
  • Apathy
References
  1. Preventing Alzheimer's disease and cognitive decline. National Institutes of Health State-of-the-Science Conference Statement. April 26-28, 2010. http://consensus.nih.gov/2010/docs/alz/ALZ_Final_Statement.pdf. Accessed June 25, 2010.
  2. Petersen RC, et al. Mild cognitive impairment ten years later. Archives of Neurology. 2009;66:1447.
  3. Roberts RO, et al. Subjective complaints in mild cognitive impairment make a difference. Acta Psychiatrica Scandinavica. 2010;21:242.
  4. Wright JD. Mild cognitive impairment. http://www.uptodate.com/home/index.html. Accessed June 28, 2010.
  5. Winblad B, et al. Mild cognitive impairment — Beyond controversies, towards a consensus. Journal of Internal Medicine. 2004;256:240.
  6. Petersen RC. Mild cognitive impairment as a diagnostic entity. Journal of Internal Medicine. 2004;256:183.
  7. Essentials of a diagnostic workup. Alzheimer's Association. http://www.alz.org/professionals_and_researchers_14902.asp. Accessed June 30, 2010.
DS00553 Aug. 26, 2010

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