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Alzheimer's disease & dementia Feb 28, 2013 | not rated yet | 0
Diana McIntyre approaches her 80th birthday later this year with the same energy and zest for life of friends decades her junior. Aside from back surgery years ago, she's never been sick and, through a busy volunteer schedule, ...
Health Feb 27, 2013 | not rated yet | 0
Though it's most often associated with disorders like diabetes, Harvard researchers have shown how the signaling pathway of insulin and insulin-like peptides plays another critical role in the body – helping ...
Neuroscience Feb 26, 2013 | 5 / 5 (4) | 0 |
A three molecule complex may be a target for treating Huntington's disease, a genetic disorder affecting the brain. This finding by an international research team including scientists from the German Center for Neurodegenerative ...
Diseases, Conditions, Syndromes Feb 26, 2013 | 5 / 5 (2) | 0 |
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Health Feb 25, 2013 | 5 / 5 (1) | 0
Contrary to other research, a new study found that the total level of antioxidants in people's diets is not related to their risk of developing stroke or dementia. The study is published in the February 20, 2013, online issue ...
Neuroscience Feb 20, 2013 | not rated yet | 0
Good mental health and clear thinking depend upon our ability to store and manipulate thoughts on a sort of "mental sketch pad." In a new study, Yale School of Medicine researchers describe the molecular basis of this ability—the ...
Neuroscience Feb 20, 2013 | 4.3 / 5 (6) | 0 |
A new sleep pattern monitoring system has been developed by UK researchers to help spot sleep disturbance in people diagnosed with early dementia. The system, known as PAViS, could be used remotely by healthcare workers to ...
Alzheimer's disease & dementia Feb 19, 2013 | not rated yet | 0
For years, neurologist William Young of Thomas Jefferson University Hospital's Headache Center has heard his patients say how bad they felt when other people did not take their migraines seriously.
Diseases, Conditions, Syndromes Feb 18, 2013 | 5 / 5 (1) | 0
(Medical Xpress)—Nearly 200 researchers recently met in Dallas to share important new findings and map strategies for identifying age-related dementias as early as possible.
Alzheimer's disease & dementia Feb 18, 2013 | not rated yet | 0
Administration of the active compound tetrahydroxystilbene glucoside (TSG) derived from the Chinese herbal medicine Polygonum multiflorum Thunb, reversed both overexpression of α-synuclein, a small protein found in the brain, ...
Alzheimer's disease & dementia Feb 16, 2013 | 5 / 5 (5) | 0
Researchers from King's College London have discovered that neuronal activity can stimulate tau release from healthy neurons in the absence of cell death. The results published by Diane Hanger and her colleagues in EMBO re ...
Alzheimer's disease & dementia Feb 15, 2013 | 4 / 5 (1) | 0 |
Amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, and frontotemporal dementia (FTD) are devastating neurodegenerative diseases with no effective treatment. Researchers are beginning to recognize ...
Alzheimer's disease & dementia Feb 12, 2013 | not rated yet | 0 |
Dementia (taken from Latin, originally meaning "madness", from de- "without" + ment, the root of mens "mind") is a serious loss of global cognitive ability in a previously unimpaired person, beyond what might be expected from normal aging. It may be static, the result of a unique global brain injury, or progressive, resulting in long-term decline due to damage or disease in the body. Although dementia is far more common in the geriatric population, it can occur before the age of 65, in which case it is termed "early onset dementia".
Dementia is not a single disease, but rather a non-specific illness syndrome (i.e., set of signs and symptoms) in which affected areas of cognition may be memory, attention, language, and problem solving. It is normally required to be present for at least 6 months to be diagnosed; cognitive dysfunction that has been seen only over shorter times, in particular less than weeks, must be termed delirium. In all types of general cognitive dysfunction, higher mental functions are affected first in the process.
Especially in the later stages of the condition, affected persons may be disoriented in time (not knowing what day of the week, day of the month, or even what year it is), in place (not knowing where they are), and in person (not knowing who they, or others around them, are). Dementia, though often treatable to some degree, is usually due to causes that are progressive and incurable.
Symptoms of dementia can be classified as either reversible or irreversible, depending upon the etiology of the disease. Less than 10% of cases of dementia are due to causes that may presently be reversed with treatment. Causes include many different specific disease processes, in the same way that symptoms of organ dysfunction such as shortness of breath, jaundice, or pain are attributable to many etiologies.
Without careful assessment of history, the short-term syndrome of delirium (often lasting days to weeks) can easily be confused with dementia, because they have all symptoms in common, save duration. Some mental illnesses, including depression and psychosis, may produce symptoms that must be differentiated from both delirium and dementia.
There are many specific types (causes) of dementia, often showing slightly different symptoms. However, the symptom overlap is such that it is impossible to diagnose the type of dementia by symptomatology alone, and in only a few cases are symptoms enough to give a high probability of some specific cause. Diagnosis is therefore aided by nuclear medicine brain scanning techniques. Certainty cannot be attained except with brain biopsy during life, or at necropsy in death.
Some of the most common forms of dementia are: Alzheimer's disease, vascular dementia, frontotemporal dementia, semantic dementia and dementia with Lewy bodies. It is possible for a patient to exhibit two or more dementing processes at the same time, as none of the known types of dementia protects against the others.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
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