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Many people who suffer with Alzheimer's disease also suffer with depression. This can be due to many reasons, not all of them connected to the Alzheimer's disease problem.
In the early stages of Alzheimer's disease, the sufferer is usually aware that they have memory impairment and this can often leave them confused and frightened about their future. Alzheimer's disease is a terrifying disease, and the knowledge of what their future may hold can often lead to the first steps of depressive disease for both the sufferer and members of their family.
Depression can occasionally be an early symptom of dementia or Alzheimer's disease, but very often a doctor doesn't or can't recognise these types of depression as dementia. However the symptoms of depression do eventually become recognisable when they cause dementia type illnesses.
It is important that memory loss in an older person is not automatically assumed to be Alzheimer's disease as depressive illness can often mimic the symptoms. There have been cases documented where the family of an older person has had a complete belief that their relative had Alzheimer's disease, yet when persuaded to have diagnostic tests, they have been found to be suffering from entirely treatable depression.
Alternatively if a person does have both Alzheimer's disease and depression, the depression can often be treated and their overall condition improved at least for a period of time.
There is a lot of research being conducted into mental illness including depression. Researchers are not really sure why we develop depressive illness, but it is thought to be linked to changes in the brain. If these changes could be identified, then there is the possibility that a cure could be discovered for some depressive diseases.
Some people who suffer from Alzheimer's disease often display symptoms of depressive illness. These can include tearfulness, hopelessness, decreased appetite, restlessness and a reluctance to become involved in activities they have previously enjoyed. They can also show symptoms of apathy including prolonged periods spent sleeping.
Crying and feelings of worthlessness are also classic symptoms of depression, and if the person is suffering from Alzheimer's disease as well, they may refuse or be unable to assist in their own self care such as washing or getting dressed.
There may also be noticeable decreases in other skills such as language, (especially if English isn't their first language), and particular motor skills. A person who is suffering from Alzheimer's disease may often wander from their home because they have forgotten where they live.
If symptoms such as these persist, then this is a good indication that the person is suffering from some type of dementia which can include Alzheimer's disease or multi infarct dementia.
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