A bizarre twist on the usual way proteins are made may explain mysterious symptoms in the grandparents of some children with mental disabilities.
Neuroscience Apr 18, 2013 | 5 / 5 (1) | 0 |
Close family members of people with Alzheimer's disease are more than twice as likely as those without a family history to develop silent buildup of brain plaques associated with Alzheimer's disease, according to researchers ...
Alzheimer's disease & dementia Apr 17, 2013 | 5 / 5 (1) | 0 |
Americans with brain diseases such as Alzheimer's disease, Parkinson's disease or multiple sclerosis (MS) who need to see a neurologist may face longer wait times or have more difficulty finding a neurologist, according to ...
Neuroscience Apr 17, 2013 | not rated yet | 0
The use of social media by older people can offer valuable additional support in cases of sickness and diseases, new research from the University of Luxembourg has shown.
Health Apr 16, 2013 | not rated yet | 0
Researchers at the Linda Crnic Institute for Down Syndrome and the University of Colorado School of Medicine have found that a single mechanism may underlie the damaging effect of cholesterol on the brain and on blood vessels.
Medical research Apr 15, 2013 | 3 / 5 (2) | 0 |
(HealthDay)—Regular exercise slows disability and prevents falls in patients with Alzheimer's disease without increasing overall costs, a new study from Finland says.
Alzheimer's disease & dementia Apr 15, 2013 | not rated yet | 0 |
A review of published research has found no evidence that drugs, herbal products or vitamin supplements help prevent cognitive decline in healthy older adults.
Health Apr 15, 2013 | 3.5 / 5 (2) | 1 |
Even a mild injury to the brain can have long lasting consequences, including increased risk of cognitive impairment later in life. While it is not yet known how brain injury increases risk for dementia, there are indications ...
Neuroscience Apr 15, 2013 | 4.8 / 5 (4) | 0 |
Cognitive training exercises—or mental exercise—may help prevent cognitive decline in healthy older adults, while evidence for the benefits of pharmacologic substances and exercise is weak, outlines a review published ...
Psychology & Psychiatry Apr 15, 2013 | not rated yet | 0
A new study by scientists at King's College London and the University of Arizona (UA) published in Science reveals the deep similarities in how the brain regulates behaviour in arthropods (such as flies ...
Neuroscience Apr 11, 2013 | 4.8 / 5 (6) | 1 |
The American College of Physicians (ACP) today unveiled a series of interventions to help patients and physicians manage prediabetes, gout, obesity and weight loss, and Alzheimer's disease.
Diseases, Conditions, Syndromes Apr 10, 2013 | not rated yet | 0
A new genetically engineered lab rat that has the full array of brain changes associated with Alzheimer's disease supports the idea that increases in a molecule called beta-amyloid in the brain causes the ...
Alzheimer's disease & dementia Apr 09, 2013 | 5 / 5 (3) | 0 |
Setting a mouse free to roam might alarm most people, but not so for nuclear imaging researchers from the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility, Oak Ridge National Laboratory, Johns Hopkins ...
Neuroscience Apr 09, 2013 | 5 / 5 (2) | 0 |
A new discovery about the malaria-related parasite Toxoplasma gondii—which can threaten babies, AIDS patients, the elderly and others with weakened immune function—may help solve the mystery of how th ...
Medical research Apr 08, 2013 | 4.3 / 5 (3) | 0 |
Researchers from Tel Aviv University describe experiments that could lead to a new approach for treating Parkinson's disease (PD) using a common sweetener, mannitol. This research is presented today at the Genetics Society ...
Genetics Apr 06, 2013 | 5 / 5 (3) | 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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