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Mnestic block syndrome.

H J Markowitsch1, J Kessler, M O Russ

  • 1Physiological Psychology, University of Bielefeld, Germany. hjmarkowitsch@post.uni-bielefeld.de

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|June 16, 1999
PubMed
Summary

A 46-year-old patient experienced severe memory loss despite normal intelligence, diagnosed as mnestic block syndrome. This condition, possibly linked to altered brain metabolism, resisted conventional treatments.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • This study reports on a 46-year-old patient, FA, diagnosed with prolonged depression.
  • FA presented with significant memory impairments alongside preserved intellectual capabilities, distinguishing him from pseudo-dementia.

Observation:

  • Over two years, FA underwent extensive investigation including neuroradiological and neuropsychological assessments.
  • Despite no detectable brain damage, FA exhibited severe and persistent anterograde and retrograde amnesia.
  • Additionally, FA experienced inhibition in his thinking processes, while overall intellectual functions remained within the normal range.

Findings:

  • The patient's condition, termed 'mnestic block syndrome,' was characterized by profound memory deficits.

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  • Standard treatments, including drug therapy and psychotherapy, were ineffective in alleviating FA's symptoms.
  • The syndrome is hypothesized to stem from altered brain metabolism, potentially involving neurotransmitter and hormonal systems like GABA, glucocorticoids, and acetylcholine.

    • Implications:

    • This case highlights a distinct neurological condition, 'mnestic block syndrome,' characterized by memory impairment without apparent brain damage.
    • The findings suggest a potential link between altered brain metabolism and severe memory dysfunction.
    • Further research is needed to elucidate the precise role of metabolic changes and the potential contribution of depression to this syndrome.