Occurs in 25-30% of ASD individuals, as compared to 2-3% of the general population. Though there is a correlation, the exact reason is uncertain. It’s suspected that there is a shared genetic link between epilepsy and autism. There also seems to be a correlation between epilepsy risk and decreased intellectual ability (per one standard deviation decrease in IQ, odds of having epilepsy increase by ~47%) (Viscidi E.W. et. al, 2013). Abnormal EEG recordings are often seen in the ASD brain, even without epilepsy.