Individuals with autism spectrum disorder experience a significant number of co-occurring medical conditions, yet little is known about these conditions beyond prevalence. Using large-scale de-identified medical records, we can use a novel phecode-based tool to characterize co-occurring conditions in autism spectrum disorder. We hypothesized that…

West Syndrome is a severe, early-onset epilepsy syndrome, with significant implications for subsequent neurological and cognitive development. While most children with a prior diagnosis of West Syndrome initially follow a normal developmental trajectory, there is evidence of subsequent emergence of clusters of difficulties, including autism…