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Diagnosis of autism. The diagnosis of autism is based on a person's reported and directly observed behavior. [ 1] There are no known biomarkers for autism spectrum conditions that allow for a conclusive diagnosis. [ 2] In most cases, diagnostic criteria codified in the World Health Organization's International Classification of Diseases (ICD ...
Usual onset. from birth. Pervasive developmental disorder not otherwise specified ( PDD-NOS) [ 1] is a historic psychiatric diagnosis first defined in 1980 that has since been incorporated into autism spectrum disorder in the DSM-5 (2013). According to the earlier DSM-IV, PDD-NOS referred to "mild or severe pervasive deficits in the development ...
Classic autism, also known as childhood autism, autistic disorder, (early) infantile autism, infantile psychosis, Kanner's autism, Kanner's syndrome, or (formerly) just autism, is a neurodevelopmental condition first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication ...
One in 100 people (1%) worldwide [ 9] Autism, also called autism spectrum disorder[ a] ( ASD) or autism spectrum condition ( ASC ), [ 10] is a neurodevelopmental disorder characterized by symptoms of deficient reciprocal social communication and the presence of restricted, repetitive, and inflexible patterns of behavior that are impairing in ...
Lujan–Fryns syndrome ( LFS) is an X-linked genetic disorder that causes mild to moderate intellectual disability and features described as Marfanoid habitus, referring to a group of physical characteristics similar to those found in Marfan syndrome. [ 4][ 5] These features include a tall, thin stature and long, slender limbs. [ 5]
The history of autism spans over a century; [ 1] autism has been subject to varying treatments, being pathologized or being viewed as a beneficial part of human neurodiversity. [ 2] The understanding of autism has been shaped by cultural, scientific, and societal factors, and its perception and treatment change over time as scientific ...
The International Classification of Diseases, Clinical Modification (ICD-9-CM) was an adaptation created by the US National Center for Health Statistics (NCHS) and used in assigning diagnostic and procedure codes associated with inpatient, outpatient, and physician office utilization in the United States. The ICD-9-CM is based on the ICD-9 but ...
There are many conditions comorbid to autism spectrum disorder such as attention-deficit hyperactivity disorder and epilepsy . In medicine, comorbidity is the presence of one or more additional conditions co-occurring with the primary one, or the effect of such additional disorders. About 10–15% of autism cases have an identifiable Mendelian ...