The CDC released new mental health data last month showing that adult ADHD diagnoses in the United States have roughly doubled since 2019. The growth has been fastest among women between 30 and 49, where diagnosis rates have climbed more than 200 percent. Stimulant prescription rates have followed a similar curve. Clinicians who practice in adult psychiatry are seeing waiting lists of three to six months in most major cities, with evaluations for adult ADHD making up a large and growing share of new referrals.
The question that keeps coming up in my conversations with colleagues is what to make of this. Is adult ADHD actually becoming more prevalent? Is it that a condition that was historically underdiagnosed is finally being identified? Is the diagnostic criteria being applied more loosely than it should be? The honest answer is that all three are probably happening at the same time, and the mix of causes matters for how we think about treatment.
The underdiagnosis argument is real. ADHD in girls and women has been missed for decades because the classic diagnostic criteria were built around the behavior patterns most common in boys. Hyperactivity, impulsivity, disruptive classroom behavior. Girls with ADHD often present differently. Inattention without obvious hyperactivity. Internalized anxiety. Social masking. Academic performance that looks acceptable on paper because the child is working three times as hard as her classmates to keep up. Women who went through school in the 1980s, 1990s, and early 2000s frequently were never evaluated for ADHD because their symptoms did not match what teachers and pediatricians were trained to spot.
A lot of the current wave of adult diagnoses is women in their 30s and 40s finally getting an explanation for patterns they have struggled with their entire lives. That is not overdiagnosis. That is correction of a historical blind spot. When these women are evaluated properly and the diagnosis fits, they often report that treatment changes their lives in ways that clearly support the diagnostic accuracy.
The overdiagnosis argument is also real. The cultural awareness of ADHD has exploded over the last few years. TikTok, Instagram, and YouTube are full of content that describes ADHD symptoms in ways that most adults can identify with on some level. Trouble focusing. Putting off boring tasks. Getting distracted by something interesting. Losing track of time. Forgetting appointments. These are symptoms of ADHD. They are also symptoms of being a human being with a smartphone in 2026.
The danger with pop culture driven self identification is that it can push people toward a diagnosis without a thorough evaluation. A competent psychiatric evaluation for adult ADHD takes time. It requires a careful history that goes back to childhood. It requires screening for other conditions that cause similar symptoms. Depression, anxiety, sleep disorders, thyroid dysfunction, and substance use all produce symptoms that overlap with ADHD. A short appointment with a hurried provider who prescribes a stimulant based on symptom checklist matches is not an adequate evaluation. That is happening more than it should, especially on telehealth platforms that built their models around rapid diagnosis and prescription.
The diagnostic question matters because treatment matters. Stimulant medication is a serious intervention. It is effective for actual ADHD, with large bodies of research showing meaningful improvement in symptoms and functioning. It also has side effects, addiction potential, and cardiovascular considerations. Prescribing stimulants to someone who does not have ADHD but has symptoms that could be better treated with sleep improvement, anxiety treatment, or lifestyle changes is not a benign decision.
What a competent adult ADHD workup looks like. First, a detailed developmental history. ADHD is by definition a neurodevelopmental condition that begins in childhood. If the symptoms did not exist before age 12, the diagnosis is probably not ADHD. That does not mean the symptoms are not real. It means something else is likely causing them.
Second, careful screening for sleep disorders. Obstructive sleep apnea in adults produces symptoms that look very much like ADHD. Fatigue, poor concentration, irritability, memory problems. A sleep study is a reasonable first step if there are any risk factors for sleep apnea, and treatment of apnea often resolves what looked like ADHD symptoms.
Third, evaluation for mood and anxiety disorders. Depression and anxiety both impair concentration and executive function. Treating the mood condition sometimes resolves the attentional problems entirely, or at least makes it clearer what residual symptoms might be ADHD.
Fourth, thyroid and iron studies. Hypothyroidism and iron deficiency both produce cognitive symptoms that can resemble ADHD. A routine blood panel catches these quickly.
Fifth, review of substances and medications. Regular alcohol use, marijuana use, and certain medications all affect attention and executive function. A thorough medication reconciliation and honest conversation about substance use is essential.
Only after all of that does it make sense to evaluate specifically for ADHD using validated instruments like the ASRS, the CAARS, or the DIVA. The evaluation should include collateral information from family members when possible, because self report alone is less reliable than self report plus someone who has known the patient since childhood.
Treatment when the diagnosis is real. Stimulant medication is the most effective treatment for adult ADHD in most cases. Behavioral interventions, cognitive behavioral therapy specifically adapted for ADHD, and coaching also have good evidence. Most adults do best with some combination of medication and behavioral work rather than medication alone.
The rise in adult ADHD diagnoses is likely real in terms of catching up on historically missed cases. It is also being inflated by casual prescription practices that do not meet clinical standards. The answer is not to dismiss adult ADHD as overdiagnosed, because that hurts the many adults who genuinely have the condition and benefit from treatment. The answer is to insist on thorough evaluations, appropriate differential diagnosis, and treatment plans that go beyond a single medication at the end of a 20 minute telehealth appointment. That is how you serve patients well.