General Information

Alzheimer's Disease

a degenerative brain disease of unknown cause that is the most common form of dementia, that usually starts in late middle age or in old age, that results in progressive memory loss, impaired thinking, disorientation, and changes in personality and mood, and that is marked histologically by the degeneration of brain neurons especially in the cerebral cortex and by the presence of neurofibrillary tangles and plaques containing beta-amyloid.

What is Dementia?

a usually progressive condition (as Alzheimer's disease) marked by the development of multiple cognitive deficits (as memory impairment, aphasia, and inability to plan and initiate complex behavior).

MID(Multi - Infarct Dementia):

also known as vascular dementia, is the second most common form of dementia after Alzheimer disease (AD) in old people.This refers to the group of syndromes which caused by different mechanisms which results in vascular lesions in the brain.
In some cases, the blood vessel may be completely blocked, that can lead to stroke. Some srokes result in dementia while others do not.It also depends on the severity of the stroke and the portion of the brain which is affected.Vascular dementia occurs within the blood vessels in the brain narrow, reducing the amount of blood flow to the some sections of the brain.

MCI(Mild Cognitive Impairment):

a transition stage between the cognitive changes of aging & Alzheimer's disease as the most serious problem.It affects many areas of cognition such as language, attention, reasoning, judgement, reading and writing.
There are two subtypes of this condition. Amnestic MCI which significantly affects memory, and nonamnestic MCI does not. Other functions, such as language and attention span, may occur in either subtype.
Amnestic MCI has been linked to Alzheimer's disease, while nonamnestic MCI may progress to other types of syndormes such as frontotemporal dementia, primary progressive aphasia or dementia with Lewy bodies.

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