Psychology Today | 25.01.2026 21:01
Adult attention-deficit/hyperactivity disorder (ADHD) has a global prevalence of 3.1% (Ayano et al., 2023b); the pediatric prevalence is approximately 8% worldwide (Ayano et al., 2023a). In a survey of American adults, approximately 6% (15.5 million) reported a diagnosis of ADHD. Half of those adults with ADHD received their diagnosis in adulthood (Staley et al., 2024). Worldwide prevalence of ADHD has remained stable since COVID-19 (Martin et al., 2025). Despite evidence that ADHD prevalence has remained stable, there has been a rise in adults believing they have ADHD, with one survey noting 1 in 4 adults suspecting they have ADHD (Scahill & Kistler, 2024).
