This condition is a weakness of the muscles used for speaking.
What to look for:
The child might speak in a whisper, have slurred speech or appear to be talking through his nose. There may also be other physical problems related to their being unable to control their muscle movement. Children with cerebral palsy often have dysarthia.
People who can help: SENCO/Resource Teacher; Speech/Language Therapist
Further Information
http://home.ica.net/%7Efred/anch10-1.html