Dysarthrias have many causes and characteristics. Children with the various types of dysarthria have a neuromuscular impairment. That is, the speech mechanism (larynx, lips, tongue, palate and jaw) may be paralysed, weak or poorly co-ordinated. Dysarthrias can affect ALL motor speech processes: breathing, producing sounds in the larynx, articulation, resonance, and the ‘prosody’ or rhythm of speech.
Phonetic disorders, phonological disorders, dyspraxia and the dysarthrias co-occur
The disorders can occur, in varying degrees, in the same individual. For example, a child might have a severe developmental phonological disorder with mild dyspraxic features. Another child might have dyspraxia with mild dysarthria.
Occur with OTHER communication disorders
Specific language impairment (SLI), semantic-pragmatic language disorder (SPLD), stuttering, voice disorders and other communication disorders can occur in the same child, alongside phonological disorders, dyspraxia and dysarthria.
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