ADHD in Adulthood
ADHD in adulthood is not a "trendy diagnosis," but a neurodevelopmental disorder that begins in childhood and persists into adulthood for many affected individuals. A recent review inWorld Psychiatrydescribes the prevalence in adults at around 2.5 % worldwide. Additionally, many affected individuals still show significant impairments even when not all classic diagnostic criteria are fully met [1].
In adulthood, ADHD often presents differently than in children. External hyperactivity and motor restlessness are less prominent; more often, issues with attention, organization, time management, impulsivity, inner restlessness, and emotional self-regulation are observed. These symptoms can significantly impact work, studies, relationships, and daily coping [1].
For Germany, particularly current healthcare data is relevant: An analysis of nationwide billing data published in 2025 shows that the incidence of newly documented ADHD spectrum diagnoses in adults increased by 199 % between 2015 and 2024 – from 8.6 to 25.7 per 10,000
At the same time, ADHD in adulthood is likely still underdiagnosed. The documented diagnosis rates in the healthcare system are significantly lower than the prevalence expected from epidemiological studies [1][2]. Many affected individuals receive the diagnosis only late – often when occupational, social, or psychological stressors have already significantly increased.
Clinically significant is primarily that ADHD in adults rarely occurs in isolation. Often, additional mental health disorders such as depression, anxiety disorders, or substance use disorders are present. These comorbidities complicate diagnosis, increase suffering, and lead to greater utilization of the healthcare system [1]. For this reason, ADHD in adulthood is not only an individual issue but also a relevant topic in healthcare provision.
Conclusion
ADHD in adulthood is common, clinically well-documented, and associated with significant suffering for many affected individuals. Current evidence shows that better diagnostics, careful differentiation from other disorders, and structured treatment are necessary. Recent data for Germany indicate a significant increase in recognized cases – likely with continued underprovision [1][2].
Literature
[1] Cortese S, et al.Attention-deficit/hyperactivity disorder (ADHD) in adults: evidence base, uncertainties and controversies. World Psychiatry. 2025;24(3):347–371.
[2] Ivanova M, et al.The Incidence of AD(H)D-Spectrum Disorders in Adults: An Analysis of Nationwide Claims Data of the Statutory Health Insurance System in Germany, 2015–2024. German Medical Journal International. 2025.