Alzheimer's disease refers to a progressive, irreversible disease characterized by degeneration of the brain cells and commonly leading to severe dementia .

It is degenerative brain disorder characterized by memory loss followed by increasing disorientation and culminating in total physical and mental helplessness and death. One of the major sites of the destruction is a pathway of acetylcholine-releasing cells leading from the base of the forebrain to the cortex and hippocampus.

Other definition:

Alzheimer's disease refers to a form of dementia in which cognitive impairment appears gradually and deterioration is progressive.

A definite diagnosis of Alzheimer's disease requires the observation of two specific types of brain lesions neurofibrillary tangles and senile plaques.

Other definition:
Alzheimer's disease refers to the disease of the Cerebral Cortex that causes an Atypical form of senile Dementia which is discovered in 1906 by German psychiatrist Alois Alzheimer.

Other definition:

Alzheimer's disease, or AD, is a progressive, incurable disease of the brain caused by the degeneration and eventual death of neurons (nerve cells) in several areas of the brain.

Patients with AD first lose such mental functions as short-term memory and the ability to learn new things. In the later stages of AD they gradually lose control over their sense of orientation, their emotions, and other aspects of behavior. End-stage AD is characterized by loss of control of body functions, an increased likelihood of seizures, loss of the ability to eat or swallow, and eventual death from infection or malnutrition.

Other /More definition:
Alzheimer's disease is a condition characterized by memory loss, confusion, depression, restlessness, hallucinations, delusions, sleeplessness, and loss of appetite.

Other /More definition:
Alzheimer's disease is the most common form of chronic organic brain syndrome, involving gradual brain failure over a period of 7 to 10 years.

Related Articles

Korsakoff psychosis at■■■■■■
Korsakoff psychosis refers to an amnestic disorder caused by damage to the thalamus as a result of chronic, . . . Read More
Creutzfeldt-Jakob disease at■■■■■■
Creutzfeldt-Jakob disease refers to extremely rare condition that causes Dementia ; - -  ; -  ; - . . . Read More
Huntington’s disease at■■■■■■
Huntington’s disease or HD refers to a genetic disorder marked by involuntary limb movements and progressing . . . Read More
Alzheimer's at■■■■■
Alzheimer's disease is a progressive neurological disease that is the most common cause of dementia; . . . Read More
Column at■■■■■
Column is a collection of cells having similar properties, arranged perpendicular to the laminae; - . . . Read More
Mental hardware at■■■■■
The Mental hardware refers to mental and neural structures that are built-in and that allow the mind . . . Read More
Dementia at■■■■■
Dementia refers to a severe deterioration of cognitive abilities, such as memory , reasoning, judgement, . . . Read More
Amnesia at■■■■■
Amnesia refers to the partial or complete loss of memory resulting from brain trauma or psychological . . . Read More
Dementia praecox at■■■■■
dementia praecox refers to a Latin term which means "premature loss of mind" is an early label for what . . . Read More
Multiple sclerosis at■■■■■
Multiple sclerosis or MS refers to a disorder in which myelin is replaced by hard fibrous tissue that . . . Read More