Is ADHD Actually on the Rise, or Are We Just Diagnosing It Better?
The numbers are striking. In England, the proportion of males with a recorded ADHD diagnosis rose from 0.7% in 2016/17 to 1.6% in 2024/25—more than doubling. For females, it increased from 0.2% to 0.9%[reference:0]. In Germany, annual first-diagnosis rates jumped from 8.6 per 10,000 people in 2015 to 25.7 in 2024[reference:1]. In the US, 6% of adults now have a current ADHD diagnosis, and 11.7% of children aged 3–17—roughly 7 million—have one[reference:2][reference:3]. Online searches for "ADHD" increased by an average of 270.5% across 19 countries between 2019 and 2023[reference:4].
These figures have fuelled a polarised debate. Is ADHD becoming more common? Or are we simply getting better at recognising and diagnosing a condition that has always been there? The answer, according to the best available evidence, leans heavily toward the latter—but the full picture is more nuanced.
The Evidence: Diagnoses Are Rising, Prevalence Is Not
A global review led by King's College London examined 40 studies across 17 countries and found no evidence that the actual prevalence of ADHD has increased since 2020[reference:5][reference:6]. As Dr Alex Martin, one of the lead researchers, put it: "The best data we have suggests that there has been no meaningful increase in ADHD prevalence"[reference:7].
However, the researchers expressed frustration at the poor quality of available data. Of the more than 9,000 studies initially screened, only 40 contained original post-2020 data, and just four were high-quality enough to avoid serious bias[reference:8]. This makes definitive conclusions difficult, but the consistent finding across the best studies is that the underlying prevalence of ADHD has remained stable.
This stability contrasts sharply with the surge in recorded diagnoses. In England, a Lancet study analysing primary care data from 2000 to 2024 found that annual incidence rates increased markedly over the study period, with an acceleration from 2020[reference:9]. The recorded diagnosis rate in England (1.19%) remains substantially lower than estimated population prevalence (3–4% of adults, 5% of children)[reference:10][reference:11]. The gap between recorded and estimated prevalence ranges from 28.7% in males aged 18–24 to 93.5% in those aged 65 and over[reference:12].
In the US, CDC data shows that 6% of adults have a current ADHD diagnosis, and just over half (56%) received that diagnosis in adulthood[reference:13]. Among children, 11.7% have a current diagnosis, up from 10.5% in previous years[reference:14]. These increases are not necessarily evidence of rising prevalence—they may reflect more complete diagnostic coverage.
Why Are Diagnoses Rising? The Key Drivers
1. Increased Awareness and Reduced Stigma
Perhaps the single most important factor is growing public and professional awareness. ADHD has shifted from being seen as a childhood condition affecting mainly hyperactive boys to a lifelong neurodevelopmental disorder with diverse presentations[reference:15]. Social media, advocacy groups, and high-profile public figures have played a significant role in this cultural shift[reference:16].
The pandemic amplified this trend. A 2024 YouGov study found that online searches for "ADHD" increased significantly in 19 of 20 countries between 2019 and 2023[reference:17]. Greater awareness has particularly benefited groups traditionally underdiagnosed, including women, who often present with inattentive rather than hyperactive symptoms[reference:18].
Reduced stigma has also encouraged more people to seek help. As Professor Philip Shaw of King's College London notes: "There's both an increased recognition and—very welcome—less stigma around ADHD, which means that people are increasingly coming forward for assessment"[reference:19].
2. Changes in Diagnostic Criteria
The diagnostic criteria themselves have changed. The DSM-5 (2013) made several key adjustments[reference:20][reference:21]:
- Lowered symptom threshold for adults: From six to five symptoms in either the inattention or hyperactivity-impulsivity domain.
- Formal recognition of adult ADHD: Previously, ADHD was conceptualised primarily as a childhood disorder.
- Extended age of onset: From 7 to 12 years, making it easier for adults to establish childhood onset retrospectively.
The 2022 DSM-5-TR further expanded symptom examples to better reflect adult presentations, recognising that symptoms manifest differently in work and adult settings compared to school and play[reference:22]. These changes have increased the likelihood of receiving a diagnosis, particularly in adults[reference:23].
As Jonna Kuntsi, professor of developmental disorders at King's College London, writes in the BMJ: "Changes over time show how the diagnostic cut-off is not set in stone and can be adjusted along the ADHD continuum, when new evidence emerges among specific age groups about the extent of symptoms and impairment that are considered severe enough to require treatment"[reference:24].
3. The Telehealth and Pandemic Effect
The COVID-19 pandemic catalysed a dramatic shift toward telehealth. Behavioral health telehealth visits grew from 41% in Q1 2020 to 67% by Q3 2023[reference:25]. This made ADHD assessments more accessible, particularly for adults who may have previously struggled to access specialist services[reference:26].
The pandemic may also have exacerbated ADHD symptoms for some. Disruption to routines, increased stress, and the challenges of remote work and schooling may have pushed previously manageable symptoms into clinically significant impairment, prompting more people to seek assessment[reference:27]. A Lancet study found an acceleration of ADHD recording from 2020, suggesting the pandemic played a role[reference:28].
4. Better Recognition in Underdiagnosed Groups
Historically, ADHD was underdiagnosed in women, minorities, and older adults. This is now being corrected. From January 2021 to October 2024, first-time diagnoses rose about 61% among those aged 30–44 and 64% among those aged 45–64 in the US[reference:29]. In England, the gap between recorded and estimated prevalence is largest in older age groups, suggesting substantial underdiagnosis remains[reference:30].
Women, in particular, are being diagnosed later in life as awareness grows that ADHD can present primarily as inattention and emotional dysregulation rather than overt hyperactivity[reference:31]. This is not a new epidemic—it is a correction of decades of diagnostic neglect.
The Overdiagnosis Debate: A Distraction or a Real Concern?
Not everyone agrees that the rise in diagnoses is purely positive. Some experts and commentators have raised concerns about overdiagnosis, arguing that normal human variation is being medicalised[reference:32]. The concept of the "worried well"—people who are distressed by their difficulties but may not meet diagnostic thresholds—has been invoked to suggest that ADHD is being overdiagnosed in high-functioning individuals[reference:33].
However, many experts argue that the overdiagnosis narrative is over-emphasised and distracts from the real problem: unmet need[reference:34]. In England, NHS England estimates that nearly 2.5 million people may have ADHD, with over 550,000 currently waiting for assessment[reference:35]. The gap between recorded and estimated prevalence suggests that far more people are underdiagnosed than overdiagnosed[reference:36].
A Healthed survey of over 1,200 GPs found that six in ten believe underdiagnosis and treatment access issues are the greater concern[reference:37]. As one commentator put it: "The argument that neurodevelopmental conditions are socially constructed or overdiagnosed is a diversion when the real difficulties experienced by individuals whose functioning is significantly impacted are undeniable"[reference:38].
Table: ADHD Diagnosis Rates – Key Data Points
| Region / Study | Period | Key Finding |
|---|---|---|
| England (OpenSAFELY) | 2016/17 – 2024/25 | Recorded prevalence: males 0.7% → 1.6%; females 0.2% → 0.9%[reference:39] |
| England (Lancet study) | 2000 – 2024 | Annual incidence rose markedly, accelerating from 2020[reference:40] |
| Germany | 2015 – 2024 | Annual first diagnoses: 8.6 → 25.7 per 10,000 people[reference:41] |
| US (CDC) | 2024 | 6% of adults (15.5 million) have current ADHD diagnosis[reference:42] |
| US Children (CDC) | 2024 | 11.7% (7 million) aged 3–17 have current ADHD diagnosis[reference:43] |
| Global review (King's College London) | 2020 – 2024 | No evidence of increased ADHD prevalence[reference:44] |
| UK ADHD UK estimate | 2025 | 3–4% of adults, 5% of children estimated to have ADHD[reference:45] |
What Does This Mean for Patients and Clinicians?
The evidence points to a clear conclusion: the rise in ADHD diagnoses is primarily driven by better recognition, not a true increase in the condition's prevalence. This has several important implications.
For patients: The increase in diagnoses is not a sign of an epidemic—it is a sign that the healthcare system is finally catching up. Many people who have struggled for years with unrecognised ADHD are now getting the answers and support they need. However, the substantial gaps between estimated and recorded prevalence mean that many still remain undiagnosed.
For clinicians: The challenge is to balance appropriate diagnosis with rigorous assessment. The expanded criteria and increased awareness mean more people will meet diagnostic thresholds, but clinicians must ensure that diagnoses are based on genuine impairment and not just the presence of symptoms. The dimensional nature of ADHD—where symptoms exist on a continuum—means that diagnostic decisions require careful clinical judgement[reference:46].
For policymakers: The surge in demand for assessments has created significant pressures on health services. In England, over 550,000 people are waiting for ADHD assessment[reference:47]. Addressing this requires investment in diagnostic services, training for clinicians, and a broader range of treatment options beyond medication[reference:48].
Conclusion
Is ADHD on the rise? The best available evidence says no—the underlying prevalence of ADHD has not meaningfully increased. What has increased is our ability and willingness to recognise it. The surge in diagnoses reflects a combination of greater awareness, reduced stigma, changes in diagnostic criteria, the expansion of telehealth, and a long-overdue correction of historical underdiagnosis in women, adults, and minority groups.
This is not to say that overdiagnosis never occurs. But the available data suggests that underdiagnosis remains the larger problem. The gap between estimated prevalence and recorded diagnoses in England—ranging from 28.7% to 93.5% depending on age and sex[reference:49]—underscores how many people with ADHD are still not receiving the recognition and support they need.
The debate about whether ADHD is "real" or "overdiagnosed" misses the point. The real question is whether people with impairing symptoms are getting the help they need. On that front, there is still much work to be done.
References
- NHS England Digital. (2025). OpenSAFELY analysis: Summary. https://digital.nhs.uk/...
- John A, et al. (2026). Attention-Deficit/Hyperactivity Disorder in Children and Adults in England, 2000-2025. The Lancet. https://www.thelancet.com
- Martin A, et al. (2025). Global review of ADHD prevalence since 2020. Journal of Affective Disorders.
- CDC. (2024). Data on ADHD in Children. https://www.cdc.gov
- CDC. (2024). ADHD in Adults. https://www.cdc.gov
- Kuntsi J. (2025). We need greater awareness of the ADHD continuum. BMJ, 390:r2034. doi:10.1136/bmj.r2034
- BBC News. (2025). Greater awareness behind ADHD surge, study suggests. https://www.bbc.com/...
- New Scientist. (2025). Is ADHD on the rise? No – but that answer doesn't tell the whole story. https://www.newscientist.com/...
- QBtech. (2025). Is ADHD on the rise? What the latest data tells us. https://www.qbtech.com/...
- American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.).
This article is for informational purposes only and does not constitute medical advice. ADHD is a complex neurodevelopmental condition that requires professional assessment and diagnosis. If you or someone you know is experiencing symptoms of ADHD, please consult a qualified healthcare provider. Never start, stop, or change medication without medical supervision.
