Verbal function is for the purpose of communication, which includes verbal comprehension and verbal expression. Speech problem includes problems in verbal content, rhythm, articulation, meaning, and grammatical function.

Classification 

• Voice problem results from abnormal expression function with vocal cord and oral-nasal resonance cavity.
• Articulation problem is attributed to functional abnormality in special consonants and vowels or in combination.
• Rhythm problem comes from abnormal rhythm when expressing verbally.
• Grammar ( syntactic ) and usage ( pragmatic ) problem are abnormal usage of verbal content under social context.

Early intervention

• Many diseases like deaf, autism, and trisomy 21 are attributions to delayed speech; have your child diagnosed first to make sure his or her precise condition. Then implement intervention with assistance of specialists.

suggestions

• Prepare hearing aid if your child has hearing impairment.
• Communication dysfunction is the primary problem if a child is autistic.
• Treatment focus values how to construct solid concept and interest when it comes to mental retarded child.
• Other individual cases will need specialists to guide parents and children.