Dementia

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language deficits such as aphasia and apraxia become prominent. Dysfluency, paraphasias, and bizzare word combinations are common midstage speech defects. In the severe stage the patient is gradually reduced to a vegetative state. Speech becomes nonfluent, repetitive, and largely non-communicative. Auditory comprehension is exceedingly limited, with many patients displaying partial or complete mutism. Late in the course of the disease many neuropsychological functions can no longer be measured. Also primitive reflexes such as grasp and suck emerge. Death usually results from a disease such as pneumonia which overwhelms the limited vegetative functions of the patient.
is commonly differentiated along two dimensions: age and cortical level. The first dimension, age, distinguishes between senile and presenile . Senile is used to describe patients who become demented after the age of 65, whereas presenile applies to patients who become demented prior to that age. Late ...

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who first used the word dementia in his De re medicina, published around AD 30. A century later the Cappadocian physician Aretaeus first described senile dementia with the word dotage (i.e., "The dotage which is the calamity of old age...dotage commencing with old age never intermits, but accompanies the patient until death."). Curiously, dementia was mentioned in most systems of psychiatric classification throughout pre-modern times, though the precise meaning of the word is often unclear (Pitt, 1987).



Nineteenth Century



It can be argued that the origins of the scientific study of dementia date back to the early nineteenth century. The initial steps were undertaken by ...

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