Is senile dementia hereditary?

Written by Zhang Hui

Neurology

Updated on September 14, 2024

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Dementia primarily refers to Alzheimer's disease, which mainly has two types: The first type is sporadic Alzheimer's disease, which does not have a clear familial history. It is caused by the degeneration and death of neurons due to various reasons, leading to certain clinical symptoms. This type of sporadic dementia does not have a genetic predisposition. The other type of dementia has a clear family history, where patients typically exhibit mutations in the APP gene, leading to increased secretion, which in turn causes the death of neurons and results in the symptoms of dementia. This familial type of dementia has a genetic predisposition. Dementia is a common condition in neurology and is the most common neurodegenerative disease. Currently, there are no effective treatments available. Family members must pay attention to caregiving, and patients can take cholinesterase inhibitors, which can improve symptoms to a certain extent.

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Written by Zhang Hui

Neurology

1min 9sec

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Causes of Alzheimer's Disease in the Elderly

The causes of dementia in the elderly are not currently completely clear. Dementia in the elderly is mainly divided into familial and sporadic types. Familial dementia shows autosomal dominant inheritance, which is caused by a gene mutation on chromosome 21 leading to the accumulation of some toxins, resulting in the death of neurons and causing dementia fundamentally due to genetic mutations. However, most cases of dementia are sporadic and do not have a clear family history. The mechanisms and reasons for disease onset are not particularly clear. Some believe that abnormalities in cerebral vascular function may lead to neuronal cell functional disorders, resulting in decreased ability to clear certain cell toxins, thus leading to neuronal apoptosis and death, and consequently impaired cognitive functions. In addition, factors such as oxidative stress, inflammatory mechanisms, excessive fatigue, and emergency stress may also cause cell death. Overall, the causes of dementia in the elderly are not particularly clear.

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Written by Tang Bo

Neurology

1min

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How long is the lifespan of someone with Alzheimer's?

The causes of dementia in the elderly can be varied, with many diseases such as Alzheimer's disease, Parkinson's disease, and vascular dementia, all leading to senile dementia. Therefore, how long one lives may require specific analysis. If the dementia is due to cerebrovascular factors, the lifespan of the individual may be closely related to the primary disease, i.e., cerebrovascular disease. Dementia caused by Alzheimer's disease progresses with the disease and affects the patient's lifespan. In its advanced stages, when the patient can no longer take care of themselves, complications such as lung infections can further impact their lifespan. There are also other factors, which need to be assessed based on the evaluation of the disease.

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Written by Zhang Hui

Neurology

1min 29sec

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Symptoms of dementia in the elderly

Dementia in the elderly is medically known as Alzheimer's disease, which is categorized into mild, moderate, and severe stages. The clinical manifestations vary with the severity of the disease. Mild dementia primarily presents as memory impairment, starting with a decline in short-term memory, where patients often forget daily activities. For instance, they might forget the way home when they go out, forget to add salt when cooking, or forget to turn off the stove. Patients may also exhibit personality disorders, such as neglecting personal hygiene or not wanting to bathe. As the disease progresses to moderate dementia, besides worsening memory impairment, the patient's ability to work, learn new knowledge, and communicate with others significantly diminishes. There is a notable decline in previously acquired knowledge and skills, such as judgment and calculation abilities. They may also experience aphasia, apraxia, agnosia, and some patients may exhibit significant behavioral and psychological abnormalities. With further progression to severe dementia, patients may become emotionally detached, exhibit unpredictable crying or laughing, fail to recognize family members, lose verbal abilities, and even become unable to perform simple tasks such as dressing or eating. They may spend their days in bed, not speaking, and gradually lose contact with the outside world, ultimately leading to death.

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Written by Zhang Hui

Neurology

1min 8sec

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How is Alzheimer's treated?

The treatment of Alzheimer's disease mainly includes the following aspects. First, enhance care to prevent accidents. Patients with Alzheimer's may get lost, forget to turn off fires or gas, etc., so it is essential to strengthen care to prevent accidents. Second, encourage the elderly to read more books and newspapers and enhance learning, which can effectively slow down the progression. Third, have the elderly interact more with others and exercise more. This can strengthen their physical health and, to some extent, delay the development of Alzheimer's disease. Another aspect is drug treatment, which mainly includes acetylcholinesterase inhibitors and some NMDA receptor antagonists. These can improve the symptoms to some extent and enhance the quality of life. Additionally, in the later stages of Alzheimer's, some psychiatric symptoms such as visual hallucinations and aggressive behavior like hitting or yelling may occur. Appropriate atypical antipsychotic drugs can be administered for treatment.

home-news-image

Written by Zhang Hui

Neurology

58sec

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Is senile dementia hereditary?

Dementia primarily refers to Alzheimer's disease, which mainly has two types: The first type is sporadic Alzheimer's disease, which does not have a clear familial history. It is caused by the degeneration and death of neurons due to various reasons, leading to certain clinical symptoms. This type of sporadic dementia does not have a genetic predisposition. The other type of dementia has a clear family history, where patients typically exhibit mutations in the APP gene, leading to increased secretion, which in turn causes the death of neurons and results in the symptoms of dementia. This familial type of dementia has a genetic predisposition. Dementia is a common condition in neurology and is the most common neurodegenerative disease. Currently, there are no effective treatments available. Family members must pay attention to caregiving, and patients can take cholinesterase inhibitors, which can improve symptoms to a certain extent.