Comorbid symptoms in toddlers diagnosed with autism spectrum disorder with the DSM-IV-TR and the DSM-5 criteria.

Highlights: [•] Comorbid psychopathology is common in individuals with ASD. [•] Comorbid symptoms are often an important and concurrent focus of treatment. [•] Many children who would meet DSM-IV-TR ASD criteria will not meet DSM-5 criteria. [•] Toddlers who met DSM-IV-TR criteria only still had significant comorbid symptoms. [•] It is important to consider treatment accessibility as DSM-5 ASD criteria are adopted. [Copyright &y& Elsevier]

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