Autism spectrum disorder is a neurodevelopmental with increasing prevalence over the past years. Its grading depends on time-consuming Scales like CARS, ADOS and GARS scales. Our aim to study if quantitative EEG can be used as marker of ASD severity. This cross sectional conducted in period from September 2021 till March 2022. It included 53 patients (41 males and12 females, age ranging between...