Journal
ACS CHEMICAL NEUROSCIENCE
Volume 14, Issue 6, Pages 1007-1016Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acschemneuro.2c00731
Keywords
autism spectrum disorder; repetitive thoughts; repetitive behaviors
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This article describes how to recognize and classify different types of repetitive thoughts and behaviors in autism spectrum disorder, clarifying which phenomena should be considered a core feature of autism spectrum disorder and which phenomena are indicative of a comorbid psychiatric disorder. Repetitive thoughts can be differentiated based on whether they are distressing and the individual's degree of insight, while repetitive behaviors can be classified based on whether they are voluntary, goal-directed/purposeful, and rhythmic.
While the core symptoms of autism spectrum disorder include repetitive thoughts and repetitive behaviors, repetitive phenomena also occur in many other psychiatric disorders. Types of repetitive thoughts include preoccupations, ruminations, obsessions, overvalued ideas, and delusions. Types of repetitive behaviors include tics, stereotypies, compulsions, extrapyramidal symptoms, and automatisms. We provide a description of how to recognize and classify different types of repetitive thoughts and behaviors in autism spectrum disorder, providing clarity on which phenomena should be considered a core feature of autism spectrum disorder and which phenomena are indicative of a comorbid psychiatric disorder. Clinical features that can be used to differentiate types of repetitive thoughts include whether they are distressing and the degree of insight the individual has, while repetitive behaviors can be classified based on whether they are voluntary, goal-directed/purposeful, and rhythmic. We present the psychiatric differential diagnosis of repetitive phenomena within the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) framework. Careful clinical consideration of these transdiagnostic features of repetitive thoughts and behaviors can improve diagnostic accuracy and treatment outcomes, and influence future research.
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