No, ADHD is a well-established neurodevelopmental condition backed by decades of scientific research. While awareness of adult ADHD has grown in recent years, this reflects better understanding — not overdiagnosis. Untreated ADHD can lead to significant challenges with employment, mental health, and quality of life. At Harley Street Mental Health, we provide careful, evidence-based assessments to ensure only those who genuinely meet diagnostic criteria receive a diagnosis.