Pervasive developmental disorders?not otherwise
specified (PDD-NOS). This term is used to identify children who do not meet the
diagnostic criteria for an established pervasive developmental disorder (PDD)
but who have developmental and behavioral problems that are similar to those
found in autism. These problems include abnormal sensitivities and unusual
behavioral responses to certain situations.
Children with pervasive developmental disorders (PDDs) have
difficulty in areas of social and emotional development, including:
Developing relationships with other people,
including their parents and children their own age.
with other people.
Having unusual behaviors and interests.
The severity of PDD varies by individual. Severely affected children
are unable to function without significant help from parents and other
caregivers. Other children are mildly affected and can develop adequate skills
to lead independent lives as adults. Many children are affected at levels
somewhere between these two extremes.
Pervasive developmental disorders are present at birth. But the
signs of these disorders may not be noticed until later, usually during the
first 3 years of a child's life.
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