Apraxia of speech
A severe speech disorder characterized by inability to speak, or a severe struggle to speak clearly. Apraxia of speech occurs when the oral- motor muscles do not or cannot obey commands from the brain, or when the brain cannot reliably send those commands. Children with apraxia can be helped significantly with intensive speech therapy. See also dyspraxia of speech.

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a speech disorder similar to motor aphasia, due to apraxia of mouth and neck muscles because of a lesion interfering with coordination of impulses from Broca's motor speech area. Called also aphemia.

Medical dictionary. 2011.

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