This case-control study assessed symptom severity and prevalence of obsessive-compulsive disorder (OCD), attention-deficit/hyperactivity disorder (ADHD), and autism spectrum disorder (ASD) in children attending a headache clinic compared to controls. We included 343 patients (5-19 years) and 130 controls (6-19 years; no prior headache diagnosis/medical contact for headache) between October 2018 and January 2024. Controls were divided into CH+ (experiencing headaches) and CH- (headache-free)….
