Difference Between Dilusions and Dementia

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Delusions are false thoughts with no logical reason for their existence. The main feature of a delusion is the degree to which the person is convinced that the belief is true. Delusions are a symptom of either a medical, neurological or mental disorder. Some people with dementia have delusions.

Dementia is a term that describes a number of conditions that are caused by problems affecting the brain. The most common symptom with all dementias is short-term memory loss.

Types
According to an article in "Psychiatry Research," there are two types of delusions that are recognized. Primary delusions arise suddenly with no connection to a person's normal thought process. Most delusions of this type are seen in conjunction with other "psychotic" symptoms like hallucinations or unintelligible speech. A delusion could be a part of a mental disorder such as manic depression, schizophrenia or generalized brain disorders like dementia. Secondary delusions are seen in people who have no psychiatric symptoms. They are influenced by the person's background (ethnic, sexual orientation, religious beliefs, superstitious) or a current stressful living situation. The person has delusions as part of a coping mechanism during a difficult time in his life. Secondary delusions may also be the result of physical illness, or a side effect of a drug.

There are several types of dementia: Alzheimer's disease (most common), vascular dementia, frontotempotal and Lewy body dementia (least common).
Causes of Delusions
According to the Merck Manual of Healthy Aging, serious physical illnesses such as a bad infection may cause secondary delusions. Brain abnormalities from dementia, a stroke or tumor, excessive consumption of alcohol or sleep deprivation can lead to primary delusions. A side effect associated with some drugs is experiencing delusions.

According to Karl Jaspers, psychiatrist and philosopher, who is the first to define the three main criteria for a belief to be considered delusional, primary delusions (sometimes called true delusions) are described by listing several types. One type is called delusional intuition, where delusions have no outside cause or influence. Another type is delusional perception where a normal concert has a delusional meaning. There is also delusional atmosphere where the world seems evil and the delusional person can somehow get rid of the evilness by having this delusion. Another type, delusional memory, is where a delusional belief is based upon the recalling of a false memory of a past experience.
Causes of Dementia
According to the Alzheimer's Association, dementia is an umbrella term used to describe a group of diseases that affect a persons memory and thinking skills. The causes of all types of dementia are not completely understood. Scientists know that the accumulation of abnormal protein that develops in the brains of many people with dementia affect the communication of one brain cell to another; however why these proteins develop in some people is still at question by the medical profession.

In Alzheimer's disease, the formation and accumulation of abnormal proteins seem to be at the root of this disease. It is unclear why these abnormal proteins develop in the first place.

In vascular dementia, the blood vessels in the brain read all of Difference Between Dilusions and Dementia