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What are the seven stages of Alzheimer's disease?

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Quick Answer

The seven stages of Alzheimer's disease begin with no impairment before progressing to a very mild decline and a mild decline, according to Healthline. The next stages, including moderate decline, moderately severe decline, severe decline and very severe decline, refer to clinical dementia.

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Patients experiencing the first stage of Alzheimer's disease show normal outward behavior, according to WebMD. During this stage, symptoms aren't obvious to other people, and only an imaging test can reveal whether or not an individual has the disease. The second stage of Alzheimer's and dementia is characterized by subtle changes that don't necessarily interfere with a patient's ability to live or work independently. When a patient reaches the third stage, changes in a patient's patterns and thinking are more obvious, such as asking questions repeatedly, forgetting names of new acquaintances, having trouble organizing or making plans, or forgetting appointments and other obligations.

During the fourth stage of Alzheimer's disease, patients experience difficulty doing habitual tasks such as using the telephone or cooking, reports Everyday Health. Patients who are going through the fifth stage of the condition experience moderately severe symptoms that necessitate some form of assistance with daily tasks. When patients experience a severe decline or the sixth stage of Alzheimer's disease, caregivers need to assist them with more activities, such as helping patients get dressed or going to the toilet. The final stage of Alzheimer's and dementia features very severe symptoms, including a loss of muscle control, language skills and an awareness of the environment.

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