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Others diagnose the general category label of PDD because they are hesitant to diagnose very young children with a specific type of PDD, such as autism. [4] Both approaches contribute to confusion about the term, because the term PDD is intended by its coiners and major bodies to refer to a category of disorders and not be used as a diagnostic ...
PDD-NOS is not a current part of the Diagnostic and Statistical Manual of Mental Disorders typology (as of the DSM-5), which is the most common diagnostic typology used in the United States. In the still used (though deprecated) ICD-10, it is considered "atypical autism" and "pervasive developmental disorder, unspecified". [8]
Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent living". [1]
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Children exposed to lead at a young age will also have an increased chance of developing ADHD. Brain injuries could cause ADHD, yet only a small number of children diagnosed fit into this category. Researchers have looked into sugar intake as the cause of ADHD, but have found little to support that theory.
People who have problems speaking may be taught to use other forms of communication, such as body language, computers, interactive devices, and pictures. [63] The Picture Exchange Communication System (PECS) is a commonly used form of augmentative and alternative communication with children and adults who cannot communicate well orally.
In total, PDD Holdings serves over 900 million consumers from around the world. PDD Holdings’ IPO. PDD Holdings went public on the Nasdaq stock exchange on July 26, 2018, raising about $1.6 billion.
CDD is a rare condition, with only 1.7 cases per 100,000. [13] [14] [15]A child affected with childhood disintegrative disorder shows normal development. Up until this point, the child has developed normally in the areas of language skills, social skills, comprehension skills, and has maintained those skills for about two years.