Webkey diagnostic features of children with asd include deficits in social communication and restricted, repetitive patterns of behavior, interest, or activities. Webautism spectrum disorders (asd) are a group of neurodevelopmental disorders that affect individuals' social interactions, communication skills, and behavioral. Webkey points for practice. • aap, in contrast to the uspstf, recommends screening for asd at 18 and 24 months of age. • chromosomal microarray and fragile x.