Alzheimer's disease is a debilitating neurological disorder that is known to common result in dementia. The disorder is characterized by gradual but progressive deterioration of cognition. The person is unable to perform the daily activities and shows marked changes in behavior. The most significant symptom of the disorder is loss of memory, which initially begins as simple forgetfulness and gradually progresses. However, a person suffering from Alzheimer's is able to retain older memories, like from his or her childhood or growing years.
As the Alzheimer's progresses, the person also loses his or her ability of language making it difficult for the person to remember words. The disorder also has an effect on co-ordinated movements, recognition, planning and decision making. These problems occur due to loss of cells and formation of plaques in the brain.
The clinical features of Alzheimer's disease are initially memory loss, which is the first symptom of manifest, followed by memory loss of recent events, the memory loss of skills, people and objects. Along with memory loss, the person also suffers from disorientation, problems with decision making and also disinhibition. A person will show changes in behavior and may become either violent or passive.
As the disease progresses, the person will start showing other clinical features like losing muscle stability, having problems of moving around, not being able to feed themselves and also incontinence.
The lifespan of a person with Alzheimer's disease is about seven to ten years, but in several people, the span is about four to five years. On the other hand, some people live as long as fourteen years with the disease.
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