8. What is childhood disintegrative disorder?
Childhood disintegrative disorder (CDD) is a neurological condition with similarities to autism. This condition can be differentiated from autism by the pattern of onset, its course, and outcome.
With CDD, children develop a condition that resembles autism, but only after a relatively prolonged period of normal neurological and behavioral development (usually 2 to 4 years) followed by extensive and pronounced neurological losses involving motor, language, and social skills.
Accompanying the motor and language losses, there is a loss of interest in social interaction and a general loss of interest in the environment. The loss of skills such as vocabulary is more dramatic in CDD than it is in classical autism-this helps to distinguish the two diseases. As CDD progresses, often toileting and self-care abilities are lost, the child may develop seizures, and IQs are very low.
The child comes to look profoundly autistic in his or her behaviors, but their disease does not progress the same as autism. As with autism, children who suffer from this condition are at increased risk for seizures. The current available data suggest that the prognosis for CDD is generally worse than that for autism.
CDD was first described in 1908 by an educator in
CDD is a rare condition. Based on four surveys, an estimate found fewer than 2 children per 100,000 with ASD who could be classified as having CDD. Put another way, strictly defined autism is approximately 10 times more common than CDD. More boys are affected with CDD than girls.
The etiology is unknown but several lines of evidence suggest that CDD arises as a result of some form of central nervous system pathology; the specific cause, however, is unknown. There is no known cure
Childhood disintegrative disorder (CDD) - is a neurological condition with similarities to autism. This condition can be differentiated from autism by the pattern of onset, its course, and outcome.
Prognosis - The possible outcomes of a condition or a disease and the likelihood that each one will occur.
Etiology - The study of the causes or origins of a disease.