Chronic tic disorders (CTDs), including Tourette syndrome, are very common in individuals with ADHD. Tics usually begin later than ADHD symptoms, sometimes not until adolescence, and range in severity. Tics are not necessarily bothersome, but youth with both CTDs and ADHD (ADHD+CTD) are more likely also to have other coexisting conditions that impact learning, emotions, and behavior. A unique quality of tics is that other people may notice them, so the presence of tics in youth with ADHD provides a useful signal to consider additional developmental and behavioral concerns. These other conditions sometimes first occur in younger children, while not until the teen years or later, if at all, in others. Management of CTDs, ADHD, and related conditions focuses on addressing the most disruptive symptoms first, and ADHD symptoms are usually more disruptive than tics. It is very helpful for youth with ADHD+CTD, their families, and their teachers to be well informed about these conditions. When treating ADHD in youth with CTDs, stimulant medication is usually safe to use.