ON THE SPECIAL TYPE OF DEMENTIA IN THE ELDERLY

Two types of dementia are widely known: Alzheimer's disease (A) and vascular dementia in patients with atherosclerosis who have suffered Acute Cerebrovascular Event (ACE). Alzheimer's disease develops in some individuals older than 75-80 years and is associated with the accretion of beta-amyloid in the wall of the smallest vessels and in the course of the capillaries of the alba. A less severe form of dementia is characteristic of some patients who have had an Acute Cerebrovascular Event at the age of 70-80 years. In this study, a group of 20 patients with dementia at the age of 55-70 years without signs of common atherosclerosis of cerebral vessels and repeated ACE, in which MRT of the brain revealed violations of the alba associated with the desolation of capillaries in the absence of signs of betaamyloid accretion. Thus, a new, special type of dementia was established, which is not associated with either disease A or spread atherosclerosis and repeated ACE.