is lewy body dementia rare?
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Understanding Lewy Body Dementia. Lewy body dementia is not a rare disease. It affects an estimated 1.4 million individuals and their families in the United States alone. Because LBD symptoms may closely resemble other more commonly known diseases like Alzheimer's and Parkinson's, it is currently widely under-diagnosed ...
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["Alzheimer's Disease.", 'Vascular Dementia.', 'Lewy Body Dementia.']
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Creutzfeldt-Jakob disease (CJD) is a rare and fatal form of dementia. It's caused by a protein found in the brain called a prion. In its natural form, this type of protein is harmless. But in its abnormal form, it's toxic to brain cells.
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It is sometimes difficult to tell whether a person has Alzheimer's disease or vascular dementia. It is also not unusual to have a mixed form of dementia, meaning the person has both vascular dementia and Alzheimer's disease together.
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["Atypical Alzheimer's disease. — Frontal variant Alzheimer's disease (fvAD) ... ", 'CADASIL.', 'Corticobasal syndrome (CBS)', 'Creutzfeldt–Jakob disease (CJD)', 'HIV-associated neurocognitive disorder (HAND)', "Huntington's disease.", 'Normal pressure hydrocephalus (NPH)', 'Progressive supranuclear palsy (PSP)']
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The Hydrocephalus Association estimates that nearly 700,000 adults have normal pressure hydrocephalus, but it is often misdiagnosed as Alzheimer's or Parkinson's disease. In fact, less than 20 percent of people with the disease are properly diagnosed.
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About 1.3 million Americans have the disease, which is caused by protein deposits in the brain. Williams was diagnosed with Parkinson's disease a few months before he died; the telltale signs of Lewy body dementia in his brain were not discovered until an autopsy.
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Each person will experience dementia differently. On average, people with vascular dementia live for around five years after symptoms begin, less than the average for Alzheimer's disease. In many cases, the person's death will be caused by a stroke or heart attack.
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Creutzfeldt-Jakob disease (CJD) is a fatal disease that causes rapid degeneration of the cerebral cortex, or the outer layer of tissue surrounding the brain. It's a very rare disease, affecting only about 300 people in the United States annually.
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Parkinson's disease (PD) is a movement disorder that afflicts over one million in the U.S.; amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease) is less prevalent but also has a high incidence. The two disorders sometimes present together, making a comparative study of interest.
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Many people affected by dementia are concerned that they may inherit or pass on dementia. The majority of dementia is not inherited by children and grandchildren. In rarer types of dementia there may be a strong genetic link, but these are only a tiny proportion of overall cases of dementia.
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The term 'dementia' is not generally used in association with multiple sclerosis because the decline is not usually as severe as it is in other forms of dementia, such as Alzheimer's disease. It is more usual to describe the person as 'experiencing cognitive difficulties'.
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Pseudodementia. Pseudodementia is a type of cognitive impairment that mimics dementia but actually occurs due to the presence of a mood-related mental health concern, most often depression. This condition is typically seen in older individuals.
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['Age. People older than 60 are at greater risk.', 'Sex. Lewy body dementia affects more men than women.', "Family history. Those who have a family member with Lewy body dementia or Parkinson's disease are at greater risk."]
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Creutzfeldt-Jakob disease (CJD) is a very rare, fatal disease that attacks the nervous system. There are two types of CJD: classical CJD and variant CJD. Unlike other diseases that are caused by bacteria or viruses, this disease is caused by abnormal pieces of protein called prions.
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At the level of the brain, Parkinson's dementia is thought to be related to Lewy bodies (sticky clumps of protein found in nerve cells of people with Parkinson's). Most people with Parkinson's develop dementia as a progression of their Parkinson's disease, rather than having both Parkinson's and Alzheimer's.
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Dementia is a symptom of some neurodegenerative diseases, and may include memory loss and difficulties with thinking, problem-solving, or language. Neurodegenerative diseases are strongly linked with age, and the UK and other European countries have an increasingly ageing population.