dementia

(redirected from Alzheimer's dementia)
Also found in: Dictionary, Thesaurus, Medical.

dementia

(dĭmĕn`shə) [Lat.,=being out of the mind], progressive deterioration of intellectual faculties resulting in apathy, confusion, and stupor. In the 17th cent. the term was synonymous with insanityinsanity,
mental disorder of such severity as to render its victim incapable of managing his affairs or of conforming to social standards. Today, the term insanity is used chiefly in criminal law, to denote mental aberrations or defects that may relieve a person from the legal
..... Click the link for more information.
, and the term dementia praecox was used in the 19th cent. to describe the condition now known as schizophreniaschizophrenia
, group of severe mental disorders characterized by reality distortions resulting in unusual thought patterns and behaviors. Because there is often little or no logical relationship between the thoughts and feelings of a person with schizophrenia, the disorder has
..... Click the link for more information.
. In recent years, the term has generally been used to describe various conditions of mental deterioration occurring in middle to later life. Dementia, in its contemporary usage, is an irreversible condition, and is not applied to states of mental deterioration that may be overcome, such as delirium. The condition is generally caused by deterioration of brain tissue, though it can occassionally be traced to deterioration of the circulatory system. Major characteristics include short- and long-term memory loss, impaired judgement, slovenly appearance, and poor hygiene. Dementia disrupts personal relationships and the ability to function occupationally. Senility (senile dementia) in old age is the most commonly recognized form of dementia, usually occurring after the age of 65. Alzheimer's disease can begin at a younger age, and deterioration of the brain tissue tends to happen much more quickly. Frontotemporal dementia, resulting from the atrophy of the frontal and temporal lobes of the brain, is the most common form of dementia, however, in persons under the age of 60. It was formerly known as Pick's disease; that term is now reserved for a specific subtype of frontotemporal dementia. Individuals who have experienced cerebrovascular disease (particularly strokes) may develop similar brain tissue deterioration, with symptoms similar to various forms of dementia. Other diseases that cause dementia include Huntington's disease and Parkinson's disease. Some forms of familial Alzheimer's disease are caused by specific dominant gene mutations.

Bibliography

See L. L. Heston and J. White, The Vanishing Mind (1991).

The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Dementia

 

irreversible deterioration of mental activity, manifested mainly by a decreased ability to acquire knowledge, loss of previously acquired knowledge, emotional apathy, and behavioral changes.

Dementia may be congenital (oligophrenia) or acquired. The concept of dementia usually refers to acquired dementia, that is, dementia resulting from mental disease. Clinically, dementia may be total or partial. Total dementia is characterized by an impairment of the ability to make judgments and arrive at conclusions, a sharply decreased critical attitude toward one’s condition, a loss of individual personality features, and a predominance of a complacent attitude (as in the case of senile psychosis). The main symptom of partial (dysmnestic) dementia is a disturbance of memory accompanied by emotional instability, helplessness, and a weakening of mental activity (as in the case of vascular disease of the brain). In partial dementia, however, consciousness of one’s own incompetence is retained, and the personality does not lose its individuality to the degree that it does with total dementia. The irreversibility of dementia is to some extent conditional, as is demonstrated by the results of treatment for patients with Bayle’s disease. In addition, there is a special form of acute transitory dementia associated with certain febrile, toxic, and other psychoses. The characteristics of dementia depend on the disease that produces the mental deterioriation; among the diseases are epilepsy, schizophrenia, and alcoholism.

M. I. FOM’IANOV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

dementia

[də′men·chə]
(psychology)
Deterioration of intellectual and other mental processes due to organic brain disease.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

dementia

a state of serious emotional and mental deterioration, of organic or functional origin
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Logistic regression and moderation modeling allowed the investigators to evaluate relationships between Alzheimer's disease pathology, frailty, and Alzheimer's dementia. Dr.
"Many of them will not progress to Alzheimer's dementia in their lifetimes.
"What we want to discover now, is whether treatment over a longer time will prevent further cognitive decline and delay or stop progression to Alzheimer's dementia," Gallagher said.
They provide an overview of cognition and memory, MCI, and Alzheimer's dementia, and describe assessment, including the role of speech-language pathologists; the rationale for intervention; cognitive stimulation programming for MCI; direct interventions; and indirect interventions for Alzheimer's.
The research findings published in the January issue of Neuropsychology showed that the e4 allele previously thought to be a genetic link to Alzheimer's dementia is instead connected to a form of mild cognitive impairment.
Atique-ur- Rehman, elaborated on the management of Alzheimer's Dementia and its associated behavioural symptoms.
Many describe Alzheimer's dementia as the "slow goodbye." The Alzheimer's patient has fleeting moments of lucidity until there are no more and which render meaningless desperate words spoken that could not have been left unsaid.
Genetics have played a role in the development of Alzheimer's dementia especially when the cognitive deficits are seen below the age of 65.
(5) This study did not distinguish between Alzheimer's dementia and other forms of dementia.
The jury returned a verdict of accidental death caused by drowing as a result of Alzheimer's dementia.
SAILING enthusiast Richard Percival is to take part in a transatlantic boat race for charity, He is now seeking sponsorship for the journey from St Lucia in the Caribbean to Plymouth, next February, with the proceeds being donated to Alzheimer's dementia care and research.
Rivastigmine, the cholinesterase inhibitor recently approved for mild to moderate Alzheimer's dementia, has a dual mechanism of action that also appears to be effective in later stages of the disease, said Dr.

Full browser ?