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Dec. 11, 2013 — Researchers at Karolinska Institutet in Sweden have developed a new screening tool to facilitate the diagnosis of Autism Spectrum Disorder in adults. The test is presented in the scientific journal Molecular Autism and is unique in that researchers have, as part of their evaluation, compared the group diagnosed with Autism Spectrum Disorder with psychiatric patients.

 

Autism Spectrum Disorder is a collective term that embraces autism and Asperger’s Syndrome. The disorder causes major problems in communicating and interacting with other people, and can lead to compulsive routines and interests. In adults, distinguishing Autism Spectrum Disorder from other psychiatric conditions can be a problem, as their symptoms often overlap or are similar to those in schizophrenia, attention deficit and hyperactivity disorder (ADHD) or severe personality disorders.

 

The screening methods used today for making a correct diagnosis are time-consuming and require considerable expertise. Research specialists at the Department of Clinical Neuroscience have, under the leadership of Dr Susanne Bejerot, refined and simplified an existing American test, RAADS-R (Ritvo Autism and Asperger Diagnostic Scale-Revised). The new test is a questionnaire with 14 self-screening questions. It is therefore known as RAADS-14 Screen. The scale includes three sub-scales that measure mentalisation difficulties, social anxiety and sensory oversensitivity — all common symptoms in autism. The answers are categorised on the basis of whether the symptoms appeared in childhood or developed later in life.

 

The newly presented evaluation included 135 adults of normal intelligence with Autism Spectrum Disorder and 508 control subjects with some form of psychiatric disorder but not ASD. 590 healthy control subjects were also included in the study. The results showed that it is possible to clearly differentiate the autism spectrum group from patients with ADHD or schizophrenia, for example. The median value in the test for Autism Spectrum Disorder sufferers was 32 points (out of a total of 42), compared with 15 for ADHD patients, 11 for those other psychiatric disorders and 3 for healthy control subjects. By drawing a line at 14 points, 97 percent of the participants with Autism Spectrum Disorder could be identified.

 

Read in Full:

http://www.sciencedaily.com/releases/2013/12/131211070217.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Fmind_brain%2Fautism+%28ScienceDaily%3A+Mind+%26+Brain+News+–+Autism%29



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