Prepared by Emma Spencer, Clinical Psychologist

ADHD in adults doesn’t always look like the stereotype we’re used to seeing, that being of the hyperactive child who can’t sit still and can’t focus. Many neurodivergent people move through the world with strengths, strategies, and a lifetime of coping skills that mask their ADHD symptoms so effectively that even they don’t realise they have been working so hard. At Spencer Health, we see this every week, bright, capable adults who have spent years wondering why things feel harder for them than for everyone else.

Recognising adult ADHD signs can be life-changing, but it often starts with understanding the more subtle versions of ADHD that tend to fly under the radar.

Subtle Signs of ADHD in Adults

Adult ADHD rarely looks like “hyperactive behaviour” and more often shows up as:

Mental restlessness – Your brain feels like it’s running multiple tabs at once, even when you’re sitting still,
Inconsistent focus – Capable of deep, passionate “hyperfocus,” yet unable to follow through on everyday or “mundane” tasks,
Chronic overwhelm – Small tasks feel like mountains and it can feel difficult to know where to begin with things,
Emotional intensity – Big feelings, strong reactions, and a deep sensitivity that can be hard to describe,
Exhaustion from performing – Holding it all together during the day, then collapsing at home in the evening and over weekends.

Many adults have spent decades masking ADHD, working at least twice as hard, often people-pleasing, relying on structure and perfectionism just to cope. This masking is adaptive, but it often hides the underlying pattern until burnout, life stress/transitions, or hormonal changes make coping harder.

Why ADHD Is Often Misdiagnosed

Because adults present so differently, ADHD is often misdiagnosed as anxiety, depression, or a personality issue. Adults tend to internalise their symptoms rather than show the outward behaviours that clinicians expect from childhood ADHD presentations.

Women, in particular, are underdiagnosed due to social conditioning and gendered expectations around being “organised,” “responsible,” and “emotionally regulated.” Many learn early to suppress their needs, push through exhaustion, and camouflage their struggles, a form of masking that is often praised rather than recognised as a sign of neurodiversity and executive functioning challenges.

A thorough ADHD assessment looks beyond just surface behaviours. It considers developmental history, executive functioning, sensory needs, emotional patterns, and strengths and takes into account the lived experience of the individual. Neuroaffirming practitioners in particular take the time to listen to the individual’s narrative, challenges, strengths, coping and impacts to really “hear” whether ADHD is at play.

When to Seek an Assessment

It may be time to seek an ADHD assessment if you recognise yourself in these patterns:

• You’ve always felt “different,” but can’t pinpoint why,
• You’re capable and driven, but your effort feels unsustainable,
• You’re burnt out from managing daily life or feel overwhelmed with everything that needs doing,
• Your coping strategies aren’t working anymore and you feel your mental health is suffering,
• You suspect you may be neurodivergent and want clarity.

Understanding your neurodiversity isn’t about labelling, it’s about self-knowledge, self-awareness, compassion, and support. Many adults describe finally receiving an ADHD diagnosis as “the missing puzzle piece” and describe it as hugely validating.

If you’re curious or concerned, our team at Spencer Health is here to help you explore your brainstyle with care, validation, and a genuinely neuroaffirming approach. Please don’t hesitate to get in touch with us to discuss how we can assist you with an assessment, coaching services or individual therapeutic support.