Subtypes of Autism Spectrum disorder

There are five different subtypes of Autism spectrum disorder: Autism, Aspergers Disorder, Childhood disintegrative Disorder, PDD-NOS, and Rett Syndrome.

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Aspergers Syndrome:  A neurodevelopment disability that affects the ability to interact and communicate with people effectively.  Symptoms include repetitive motor patterns, difficulty in assessing others' feelings and reading others, poor muscle coordination, problems understanding humor or sarcasm, and being sensitive to noise, touch, odor, or tastes.

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Autism Disorder: a neurological and developmental disorder that usually appears during the first three years of life. A child with Autism appears to live in their own world. They show little interest in others and lack social awareness. Their focus is on a consistent routine, including an interest in repeating odd and peculiar behaviors. Also, communication problems, avoiding eye contact, and little attachment to others. (Yale Medical Group, www.ymghealthinfo.org content.asp)

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Pervasive Developmental Disorder, Not otherwise specified: (PDD-NOS) used when there is severe impairment in social interaction and verbal and nonverbal communication skills or when stereotyped behavior, interest, and activities are present but symptoms do not meet the criteria for other autistic disorders" (Canadian Autism Intervention Network, www.cairn-site.com/glossary/glossary.html#P)

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Childhood disintegrative Disorder: A condition characterized by the loss of previously acquired language, motor, and social skills, or late onset of developmental delay, also known as Heller's syndrome.

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Retts Disorder is a rare genetic neurological and developmental disorder that affects brain development. This disorder causes a progressive loss of motor skills and language.  (1998-2022, Mayo Foundation for Medical Education and Research (MFMER))

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Retrieved from the Autism Manual -ACT Autism Community Training (2016).