Dementia refers to a severe deterioration of cognitive abilities, such as memory , reasoning, judgement, and other higher mental processes.
Other /More definition:
dementia refers to the gradual-onset deterioration of brain functioning, involving memory loss, inability to recognize objects or faces, and problems in planning and abstract reasoning. These are associated with frustration and discouragement.

Related Articles

Amnestic disorder at psychology-glossary.com■■■■■■■
Amnestic disorder refers to a form of cognitive disorder characterized by memory impairments that are . . . Read More
Prosopagnosia at psychology-glossary.com■■■■■■
Prosopagnosia refers to a  specific inability or impaired ability to recognize or identify faces, even . . . Read More
Alcohol-induced dementia at psychology-glossary.com■■■■■
Alcohol-induced dementia refers to the loss of intellectual abilities due to prolonged alcohol abuse, . . . Read More
Deficit at psychology-glossary.com■■■■■
A deficit refers to a lack or shortfall in a specific area of functioning or ability. Deficits can be . . . Read More
Malfunction at psychology-glossary.com■■■■■
In psychology, malfunction refers to a breakdown in cognitive, emotional, or behavioral functioning that . . . Read More
Alzheimer’s-type dementia at psychology-glossary.com■■■■■
Alzheimer’s-type dementia refers to a chronic progressive disorder that begins with mild memory loss . . . Read More
Alzheimer's disease at psychology-glossary.com■■■■■
Alzheimer's disease refers to a progressive, irreversible disease characterized by degeneration of the . . . Read More
Facial agnosia at psychology-glossary.com■■■■■
Facial Agnosia refers to a type of  Agnosia characterized by a person"s inability to recognize or perceive . . . Read More
Blindsight at psychology-glossary.com■■■■■
Blindsight refers to the ability to localize objects within an apparently blind visual field; traces . . . Read More
Agnosia at psychology-glossary.com■■■■■
Agnosia refers to the inability to identify objects, inability to organise sensory information so as . . . Read More