The Brain of Elderly People with Dementia
There are four main types of Dementia
- Alzheimers Disease
- Vascular Dementia
- Lewy Body
- Frontal Lobe Dementia
1. Alzheimer’s Dementia
Study reveals that Alzheimers is a disease that advances all over the brain and slowly damages a persons capacity to think and their capability to remember.
Of men and women who suffer from dementia, Alzheimers Disease is affecting approximately 50-60% . It is the most common cause of dementia in comparison to the types listed over. The signs and symptoms of Alzheimers range from loss of skills, memory loss, the ability to process language, behavioral changes and psychological changes such as hallucinations and delusions.
As the health condition advances, the person with dementia will be unable to walk and may have total dependence. Although the risk of acquiring Alzheimers will increase as people get older, in most people the symptoms first appear after the age of 60. Existing investigation doesn’t know what causes the development of Alzheimers disease to begin. Though the disease progression has been well recorded as soon as it advances.
Understand Alzheimer’s Disease in 3 Minutes
Alzheimers and the Brain
It is not yet discovered what factors Alzheimers Disease to begin, but we do know a lot about what takes place in the human brain once Alzheimers Disease takes hold.
Preclinical Alzheimers Disease
Signs of Alzheimers Disease are first noticed in the entorhinal cortex, and then continue to hippocampus.
- affected regions begin to shrink as nerve cell die.
- changes can begin 10-20 years before symptoms appear.
- memory loss is the first sign of Alzheimers Disease.
Mild to Moderate Alzheimers Disease
Alzheimers Disease spreads through the brain. The cerebral cortex begins to shrink as more and more neurons stop working and die.
Mild Alzheimers Disease signs can include memory loss, confusion, and trouble handling money, poor judgement, mood changes, and increased anxiety.
Moderate Alzheimers Disease signs can include increased memory loss and confusion, problems recognizing people, difficulty with language and thoughts, restlessness, agitation, wandering, and repetitive statements.
Severe Alzheimers Disease
In severe Alzheimers Disease, extreme shrinkage occurs in the brain. Patients are completely dependent on others for care.
- symptoms can include weight loss, seizures, skin infections, groaning, moaning, or grunting, increased sleeping , loss of bladder and bowel control.
- Death usually occurs from aspiration pneumonia or other infections. Caregivers can turn to hospice for help and palliative care.
What’s the Difference Between Alzheimer’s Disease and Dementia?
2. Vascular Dementia and Multi infarct Dementia
Vascular dementia is formed by a decrease of the blood supply to the brain. Therefore brain cells are deprived of oxygen and nutrients. Specifically the brain is starved of glucose which is vital power supply for brain cells. This interrupted blood supply directs to permanent destruction of brain tissues.
- Multi infarct
It is the 2nd most common cause of dementia in people 65 years older.
Triggered by a number of small strokes or occasionally, one big stroke preceded or followed by other cerebrovascular events. The final outcome is that areas of the brain have disrupted blood supplies and the disrupted blood supply leads to destroyed brain tissue.
This type of dementia is diagnosed by checking at a persons background, CT scan or MRI scan. Usually this disease affects men more than women and it is likely to have younger age onset than Alzheimers disease.
Relying on what section of the human brain is damaged, the person may have different symptoms, including a difference in gait( walk ) and urinary difficulties.
Vascular Dementia Video : Causes & Prevention
3. Lewy Body Dementia
Lewy body dementia symptioms have characteristics that are comparable to Parkinsons disease. Latest study has proven that as a result of having large deposits of protein inside brain cells can cause an impaired ability to think. This is called Lewy Body dementia and these protein deposits are called Lewy Bodies. A person with these traits may have some possible behavioral changes.
Lewy bodies group together in the part of the brain that regulates mobility,sense of balance, thinking and memory.
Post mortems often reveal that the human brain has huge volumes of protein groups which are circular and end up displacing other cell components.
Check out this Lewy Body Dementia Video
4. Frontal Lobe Dementia
Can a head injury cause dementia?
Frontal Lobe Dementia is an impairment of the frontal lobe of the brain and takes place as a result of a number of diseases as well as head trauma. These diseases could be Picks disease, Huntington’s, Motor Neurone disease, Korskoffs.
There are significant variations in the symptoms of someone suffering from Frontal Lobe Dementia, People with dementia can be depressed, suicidal, anxious, unsympathetic, or excessively sentimental.
Other symptoms from this disease range from the cognitive problems such as short attention span, emotional problems such as a difficulty in inhibiting emotions and behavioral problems such as inappropriate sexual behaviors.
Check out this Frontotemporal Dementia Explanation Video