Chapter 17

Neurodevelopmental Disorders

Set B

Childhood Disintegrative Disorder (CDD)

A rare condition characterized by late onset of development and delays in language, social function and motor skills.

Communication Disorders

Problems with the articulation of sounds.

Childhood-Onset Fluency Disorder (Stuttering)

A problem with the fluency and time-patterning of speech which involves frequent repetitions or prolongations of sounds, pauses within words, pauses in speech, word substitutions, words produced with an excess of physical tension, and monosyllabic word repetitions.


A congenital disorder resulting in slow development, intellectual disabilities and small stature.

Developmental Disabilities

A broad umbrella term used, in the USA, to refer to intellectual disabilities and pervasive developmental disorders such as autism and Asperger’s.

Cerebral Palsy

The main neurological birth syndrome caused by anoxia which is characterized by motor symptoms that affect the strength and coordination of movement.

Congenital Disorders

Disorders acquired during prenatal development prior to birth but which are not genetically inherited.

Congenital Rubella Syndrome (CRS)

The constellation of abnormalities caused by infection with the rubella (German measles) virus before birth. The syndrome is characterized by multiple congenital malformations (birth defects) and intellectual disability.