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Autism is a lifelong disability with symptoms typically appearing during the first three years of life. Autism Spectrum Disorders are neurobiologically based and encompass a wide range of disabilities that may
affect thought, perception, and attention. Autism Spectrum Disorders (ASD) are also known as Pervasive Developmental Disorders (PDD) and include: Pervasive Developmental Disorder-Not Otherwise Specified
(PDD-NOS), Asperger’s Syndrome, Childhood Disintegrative Disorder, Rett’s Syndrome, and Autistic Disorder. The term “autism” can thus be used to refer to this entire group of disorders or to the specific
subcategory of Autistic Disorder (also known as classical autism).
Autism can block, delay, or distort signals from any or all of the senses. It is difficult for people with autism to interact with other people through social activities and spoken communication.
Pragmatic language skills, including gestures, facial expressions, body language, and other nonverbal communication, may also be impaired. Autism may also be associated with difficulties with learning,
imagination, and reasoning.
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