childhood disintegrative disorder

(redirected from Heller Syndrome)
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childhood disintegrative disorder

[¦chīld‚hu̇d dis′in·tə‚grād·iv dis‚ȯrd·ər]
(psychology)
A condition occurring in 3- and 4-year-old children that is characterized by unequivocally normal development in the first several years of life, followed by a marked developmental regression (a child who previously had been speaking in sentences becomes totally mute), and various autistic features develop. Also known as Heller's syndrome.
References in periodicals archive ?
Other PDDs, which may be difficult to distinguish from autism, include Asperger syndrome, atypical autism, Rett syndrome, childhood disintegrative disorder (Heller syndrome) and pervasive developmental disorder-not otherwise specified (PDD-NOS).