Understanding ADHD

Attention Deficit Hyperactivity Disorder (ADHD) is a term many people have heard, but there is often confusion about what it really means. A common misconception is that ADHD is a mental health condition. However, it is more accurately classified as a neurodevelopmental disorder.

What is ADHD?

ADHD is characterised by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with daily life. These behaviours are developmentally inappropriate and can affect learning, relationships, and work. ADHD is typically diagnosed in childhood but often continues into adulthood.

Unlike some mental health conditions that develop later, ADHD originates in brain development, affecting how nerve pathways function and how the brain processes information.

ADHD vs Mental Health Conditions

ADHD is distinct from mental health disorders but often occurs alongside them. People with ADHD frequently experience anxiety, depression, and mood disorders—sometimes as a direct result of the challenges ADHD creates.

This overlap can complicate diagnosis. In fact, studies suggest that 25-30% of adults with mental health conditions also have undiagnosed ADHD.

The Diagnosis Crisis in England—and West Sussex

NHS data shows approximately 549,000 people across England are currently waiting for NHS ADHD assessments, with waiting times ranging from several months to over 8 years in some areas. For adults especially, the backlog is critical.

Only about 1 in 9 people with ADHD have a formal diagnosis nationwide. Applying this locally, it’s estimated that 17,000 to 25,500 people in West Sussex likely have undiagnosed ADHD, living without the support they need.

ADHD and Addiction

Further complicating the picture, research finds that 25% of people in addiction treatment display ADHD traits, highlighting the importance of integrated, specialised care for these populations.

Why Understanding This Matters

Recognising ADHD as a neurodevelopmental disorder guides effective treatment strategies tailored to the brain’s unique challenges in attention and impulse control. It reduces stigma and helps families, employers, and care providers create supportive environments.

Ashton Care Group’s Commitment

At Ashton Care Group, we are dedicated to raising awareness about ADHD’s true nature among our teams and clients. We aim to provide compassionate, informed care that respects neurodiversity and promotes wellbeing.

Sources for Fact-Checking and Further Reading

1. NHS England ADHD Taskforce Report, June 2025:https://www.england.nhs.uk/long-read/report-of-the-independent-adhd-taskforce-part-1/

2. ADHD Diagnosis Rate Research, 2025:https://adhduk.co.uk/right-to-choose/

3. King’s Fund Blog on NHS ADHD Waiting Lists, June 2025:https://www.kingsfund.org.uk/insight-and-analysis/blogs/waiting-nhs-adult-adhd-assessment-england

4. Psychiatry UK Waiting Times Update, July 2025:https://psychiatry-uk.com/waiting-times-update/