KEY CAUSES
Damage to the brain cells is what causes Dementia. Such damage affects the performance of the brain cells which then limits the communication of such cells. The failure in communication by the brains cells leads to the impairment of one’s ability to think, feel and/or act.
Different types of dementia are due to damage in different parts of the brains. Each part of the brain is responsible for various functions. For example, in Alzheimer's disease, high levels of certain proteins inside and outside brain cells make it hard for brain cells to stay healthy and to communicate with each other.
SYMPTOMS
Symptoms of dementia can vary greatly. Here are a few common examples:
Cognitive changes:
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Noticeable memory loss
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Difficulty communicating or finding words
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Difficulty with visual and spatial abilities, such as getting lost while driving
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Difficulty with coordination and motor functions
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Confusion and disorientation
Psychological changes
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Personality changes
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Depression
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Anxiety
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Paranoia
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Hallucinations
The symptoms of dementia usually start out slowly and worsen as time goes on. If you see these symptoms manifesting in someone, check with a doctor just to make sure. Professional evaluation may detect a treatable condition.