Developmental disorders

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Developmental Disorders

Developmental disorders (/dɪˈvɛləpməntəl dɪsˈɔːrdəz/), also known as developmental disabilities, are a group of conditions due to an impairment in physical, learning, language, or behavior areas. These conditions begin during the developmental period, may impact day-to-day functioning, and usually last throughout a person’s lifetime.

Etymology

The term "developmental disorders" is derived from the English words "development" and "disorder". "Development" (/dɪˈvɛləpmənt/) comes from the Old French desveloper meaning "to unwrap, unfurl", and "disorder" (/dɪsˈɔːrdər/) comes from the Middle English disorden meaning "lack of order or regular arrangement".

Types of Developmental Disorders

Developmental disorders include a broad range of conditions, some of which are:

Related Terms

  • Neurodevelopmental Disorders: A group of conditions with onset in the developmental period. The disorders typically manifest early in development, often before the child enters grade school, and are characterized by developmental deficits that produce impairments of personal, social, academic, or occupational functioning.
  • Pervasive Developmental Disorders (PDD): These disorders are characterized by delays in the development of socialization and communication skills. Parents may note symptoms as early as infancy, although the typical age of onset is before 3 years of age.

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