Aphemia
Aphemia is the alternate term for mutism. Mutism is an absence of speech with an apparently normal level of consciousness. Mutism can be dissociative (hysterical) in which an individual (commonly a child or adolescent) stops speaking at once without the involvement of any neurological or physical contributing factor, or it can be elective (selective) in which a child does not speak at all in certain situations (such as in school) but speaks well in other conditions (like at home or at play). A rare cause of mutism is akinetic mutism which results due to a lesion around the 3rd ventricle of the brain.
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