Primary progressive aphasia - Definition

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Primary progressive aphasia is a sort of aphasia due to a rare degenerative neurological disorder, near Alzheimer's disease and beginning generally between the ages of 50 and 70 years old. The language disorder evolves slowly, beginning to affect either the comprehension or the production of language, or both. The speech is slower, the choice of words is complicated, if not impossible. It can be associated to modifications in behavior, apathy, and short-term memory loss. Neuropsychological tests or imagery techniques can be useful in diagnosing primary progressive aphasia.