Autism spectrum disorders (ASDs) are neurodevelopmental disorders characterized by impaired social communication skills and isolated areas of interest.1 The current prevalence of these disorders is estimated to be 1 in 68,2 and recent estimates of the risk of recurrence in families with at least 1 child diagnosed with ASD are 10% to 19%.3,5 Advances have been made in identifying genetic variants that can account for biological vulnerability to ASD,6,7 although recent studies examining patterns of heredity implicate environmental factors and potential gene-by-environment interactions.8 Although the exact etiology remains unknown in most families, some researchers suggest that the pathogenesis of the disorder begins during prenatal life.9,10 It is likely that ASD is heterogeneous in its etiology as well as in its clinical presentation.11 

The American Academy of Pediatrics has recommended screening for ASDs at 18 and 24...

You do not currently have access to this content.