What is Adult ADHD? By David Hennessy, Clinical Psychologist
Adult Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental condition characterised by persistent patterns of inattention, impulsivity, and hyperactivity that interfere significantly with everyday functioning and quality of life. Often misunderstood or overlooked, ADHD can profoundly impact adults, influencing relationships, career progress, and overall emotional well-being.
Adult ADHD | Possibly Undiagnosed or Sub-threshold in Childhood
Many adults with ADHD were either never diagnosed during childhood or had symptoms that were not pronounced enough to attract clinical attention. Childhood ADHD symptoms may sometimes be subtle, resulting in adults who grow up feeling chronically overwhelmed, stressed, and misunderstood without understanding why.
Similarities to Traumatic Stress Syndrome and Burnout
The lived experience of adults with undiagnosed or sub-threshold ADHD shares significant similarities with trauma syndromes and burnout. These parallels include:
- Chronic stress: Continuous effort to manage undiagnosed ADHD symptoms can lead to persistent stress, emotional exhaustion, and feelings of helplessness.
- High allostatic load: The body’s cumulative stress response—known as allostatic load—is often elevated, reflecting the ongoing mental, emotional, and physiological strain similar to prolonged trauma.
- Overwhelmed nervous system: Adults with ADHD frequently report a persistent sense of overwhelm, as their nervous systems remain in a heightened state of arousal, similar to long-term stress reactions seen in trauma.
Recognising Adult ADHD
Common signs of adult ADHD include:
- Difficulty concentrating or maintaining focus
- Persistent procrastination and organisational challenges
- Frequent mood swings and emotional dysregulation
- Restlessness or difficulty relaxing
- Impulsive behaviours and decisions
Hope and Management
Recognition and identification can be life-changing, explaining longstanding struggles and providing pathways for effective management. Individuals can significantly reduce their symptoms and improve their quality of life with the right support, such as cognitive behavioural therapy (CBT), structured lifestyle adjustments, and sometimes medication.
Recognising and addressing adult ADHD provides an opportunity for meaningful change, greater understanding, and a renewed sense of hope and control.
Resources and Further Reading
- Hennessy Clinical Psychologist | David the Psychologist
- ADHD Australia
- ADHD Guidelines Australia
- Beyond Blue – ADHD in Adults
- CHADD – Adult ADHD Information
