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Reversible dementias
  1. T Dwolatzky1,
  2. A M Clarfield2
  1. 1Memory Clinic, Shaare Zedek Medical Centre, Jerusalem, Israel
  2. 2Department of Geriatrics, Soroka Hospital and Sidonie Hecht Professor of Gerontology, Ben Gurion University of the Negev, Beersheva, Israel
  1. Correspondence to:
 Dr T Dwolatzky; dwolatzky{at}

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The concepts of potentially reversible cognitive impairment in general, and the reversible dementias in particular, remain controversial. The prevalence of these conditions depends to a great extent on the definitions used and on the population studied. Also, the definition of those cases with potentially reversible conditions that actually do reverse remains a critical aspect in assessing these conditions.

In their article, Hejl et al1 present the results of a prospective study to investigate the prevalence of potentially reversible causes of cognitive decline in consecutive patients presenting to a tertiary medical centre memory clinic. The description that they provide of a large cohort provides an important contribution to our understanding of this condition. However, as was mentioned by the authors in the discussion, the rather high prevalence (19%) of potentially reversible causes detected …

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