The Alzheimer's disease (MY) is a major problem of public health. The French National Database Alzheimer ( BNA) registers(records) all the medical acts made by units of memory(report) and of independent specialists in France.

In 2008, the national Plan Alzheimer 2008 - 2012 had for objective to strengthen the search(research) on the Alzheimer's disease (MY) and for related disorders(confusions), to promote an early diagnosis and to improve at the same time the management of the patients and to support careers(quarries). A specific part(party) of this plan gave rise to the creation of the French national database Alzheimer ( BNA) to supply epidemiological data as well as indicators of activity. Since 2009 The information collected(taken in) in the BNA consists of a set(group) limited by data (CIMA of information minimum Corpus Alzheimer) concerning the demographic, clinical and diagnostic data defined by national consensus. The number of variables is limited to facilitate and to improve the participation in this national database. The participants are the Centers Report (CM)((LECTURE)) and Center Memory(Report) of Resources and Search(Research) (CMRR) and independent specialists. In 2015 more than 500 Centers send CIMA to the BNA.

The plan Disease Neurodegenerative 2014 - 2019 wishes to pursue and to amplify the BNA.

Inclusion Criteria:

• patients consulting in French Memory Centres

Exclusion Criteria:

-

Alzheimer desease and related disorders patients