Guide to Symptoms, Testing, and Diagnosis in the UK….
If you often find yourself struggling to stay focused, battling disorganisation, or feeling a constant inner restlessness you can’t quite explain, you’re not alone. These can be common signs of Attention Deficit Hyperactivity Disorder (ADHD), a neurodevelopmental condition that affects millions of children, teenagers, and adults across the UK.
For many people, seeking answers is the first step toward understanding and taking control. Choosing a trusted, professional partner for that journey is an important part of the process.
At The ADHD Portal, we’re here to provide that clarity. We specialise in assessing ADHD and other neurodevelopmental conditions. Drawing on extensive NHS experience, we offer gold-standard assessments and support, leading to a recognised diagnosis accepted by both the NHS and HSE.
If you’re ready to find answers, your journey can begin here
ADHD Symptoms in Adults
For many adults, signs of ADHD may have been present since childhood but were overlooked or misunderstood. In adulthood, ADHD often shows up less as visible hyperactivity and more as internal restlessness, disorganisation, and challenges with executive functioning.
Common signs include:
Difficulty concentrating at work or completing complex tasks
Ongoing procrastination and poor time management
Struggles with organisation, frequently misplacing items, or forgetting appointments
Impulsive decision-making (such as spending or major life choices)
A persistent sense of inner restlessness or feeling constantly “on the go”
Difficulty managing emotions, including heightened sensitivity to criticism (often referred to as Rejection Sensitive Dysphoria)
Think you might recognise these symptoms? The Adult Self-Report Scale (ASRS) is a widely used screening tool that professionals rely on to help identify signs of ADHD.