Purpose: Long-term seizure and developmental outcomes of benign childhood epilepsy with centrotemporal spikes (BECTS) are thought to be good. Studies have shown that behavioral disorders may accompany BECTS. We aimed to investigate the frequency of behavioral disorders in patients with BECTS and evaluate their relationship to epilepsy features. Methods: Data for 41 patients with BECTS followed up at our clinic between December 2019 and June 2020 were analyzed. Behavioral disorders and intelligence were evaluated by the Turgay Diagnostic and Statistical Manual of Mental Disorders 4th Edition & ndash; Disruptive Behaviour Disorders Rating Scale and Wechsler Intelligence Scale for Children Revised, respectively. Patients with a diagnosis of BECTS were divided into 2 groups: children with a behavioral disorder and children without a behavioral disorder. Demographic characteristics, clinical and electroencephalography (EEG) findings, and intelligence level were compared between the two groups. Results: Twelve of the patients (29%) were classified as having attention-deficit/hyperactivity disorder (ADHD) and 2 (5%) were classified as having oppositional defiant disorder (ODD). The age at seizure onset was earlier in patients with behavioral disorders (p = 0.023). Bilateral interictal epileptic discharges (IEDs) were more common in children with behavioral disorders than children without behavioral disorders (p = 0.039). The most preferred antiseizure medication was carbamazepine, followed by levetiracetam and valproic acid. The intelligence score of the patients with BECTS was in the normal range in both groups. The total, verbal, and performance scores were lower in patients with a behavioral disorder than in patients without a behavioral disorder, but there was no statistically significant difference between the two groups. Conclusion: Behavioral disorders may be present in approximately one-third of patients with BECTS. Early onset of seizures and the presence of bilateral IEDs may be risk factors for behavioral disorders in children with BECTS. (c) 2021 Elsevier Inc. All rights reserved.