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What is Childhood Apraxia of Speech (CAS)? Childhood Apraxia of Speech (CAS) is a neurological motor speech disorder. Children with CAS have problems saying sounds, syllables, and words. This is not because of muscle weakness or paralysis. The brain has problems planning to move the body parts (e.g., lips, jaw, tongue) needed for speech. The child knows what they want to say, but their brain has difficulty coordinating the muscle movements necessary to say those words. In other words, the child knows what they want to say, but their brain has trouble making the muscle movements in their jaw, tongue,…