ADHD: An Evidence-Based Guide to Understanding, Assessment and Treatment

What is ADHD?

This educational guide discusses ADHD, assessment considerations, medication questions and CBT-based support. ADHD is a recognised neurodevelopmental condition, but a blog cannot establish whether one person meets diagnostic criteria, explain every difficulty they have, or determine the next step that is right for them. People may recognise experiences such as difficulty starting tasks, variable attention, losing track of time, impulsivity, restlessness, intense focus, overwhelm or exhaustion after sustained effort. These experiences can be meaningful, but they are not diagnostic on their own. Similar patterns can arise in different contexts, including anxiety, low mood, trauma, sleep disruption, physical health, medication, burnout, sensory demands, practical stress or ordinary variation. An appropriate ADHD assessment can consider developmental history, current functioning, health information, risk, medication, strengths, context and other explanations. It may involve a GP, specialist assessment service or other qualified clinician. The Lyceum Clinic does not diagnose ADHD or prescribe medication. A website cannot tell a visitor whether to pursue a particular assessment pathway. Medication is one option that may be discussed in ADHD care by an appropriately qualified prescriber. Psychological support, workplace or education adjustments, practical tools, sleep support, peer support and other approaches may also be relevant. The options, their order and their potential benefits or risks depend on individual assessment rather than a universal treatment ranking. Medication should not be started, stopped or changed on the basis of an article. CBT-based therapy may be considered for ADHD-related concerns where clinically appropriate. It can provide a structured space to explore the interaction between attention, emotion, routines, self-criticism, demands, relationships and environment. It does not replace diagnosis, prescribing, medical care, legal advice or workplace decisions. Where behavioural work is suitable, it is planned collaboratively with a qualified clinician and adapted to the person’s goals, capacity, sensory needs and circumstances. It may help to bring a few examples to a professional conversation: what was difficult in childhood and now, where functioning is affected, which supports have helped, relevant health or medication information, and what outcome would feel useful. These observations are not proof of ADHD. They can support a more careful, person-centred assessment. For related information, see <a href="/cbt-for-neurodivergent-people/">neurodiversity-affirming support</a>, <a href="/guides/cbt-support-for-neurodivergent-adults/">the guide to CBT-informed support for neurodivergent adults</a> and <a href="/guides/adhd-diagnosis-west-london/">the ADHD assessment guide</a>. If distress includes crisis, thoughts of self-harm or an inability to keep safe, urgent appropriate help is needed.