TY - CHAP M1 - Book, Section TI - Autism Spectrum Disorder and Regressive Developmental Disorders A1 - Wied, Heather M. A1 - Standridge, Shannon M. A2 - Hershey, Andrew D. PY - 2023 T2 - CURRENT Diagnosis & Treatment Pediatric Neurology AB - Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in communication and social interactions, occurring with restricted patterns of behavior or interest.1 The ASD diagnosis focuses on the presentation of these behaviors and includes both identifying deficits and restrictions and determining their severity, which may range from mild to severe. Signs of ASD typically manifest within the first 2 years of life, but diagnosis may be delayed until a later age, especially with mild symptoms. SN - PB - McGraw Hill Education CY - New York, NY Y2 - 2024/12/06 UR - neurology.mhmedical.com/content.aspx?aid=1195236384 ER -