I was diagnosed with ADHD as an adult. I know what it’s like to spend years wondering why things that seem straightforward for everyone else feel so difficult.
You are not lazy. You are not scattered. You are not broken
A lot of the adults who find me have been managing ADHD for thirty or forty years without knowing that’s what it is. They’ve developed elaborate workarounds, they’ve internalised a story about themselves that isn’t quite right, and they’ve spent a lot of energy compensating for something that could have had a name. Let’s get you the right explanation — and a plan for what comes next.
Adult ADHD is real, common, and systematically under-recognised
Adult ADHD is one of the most common — and most under-recognised — psychiatric conditions in adulthood. Estimates from large-scale epidemiological studies put adult ADHD prevalence at roughly 4 to 5 percent of the adult population globally. Research in the Asia-Pacific region, including Singapore, suggests the condition is recognised and treated at rates substantially below what the prevalence data predicts — meaning many adults here have never been diagnosed, never been told the explanation, and never been offered the treatment.
There are specific reasons for this:
The field historically assumed — incorrectly — that ADHD was a childhood condition that people “grew out of.” Longitudinal data published over the last two decades has established that the majority of children with ADHD continue to meet diagnostic criteria into adulthood, though the presentation changes.
Diagnostic criteria were built on samples of young boys. Adults — particularly adult women — often do not look like the textbook picture, which was never them to begin with.
Adults with ADHD are often intellectually capable and outwardly functional. They can hold jobs, complete degrees, get married, and raise children. They compensate. The cost of that compensation — chronic stress, exhaustion, poor sleep, relationship strain, anxiety, low self-worth, substance use in some cases — is often invisible to others and sometimes to themselves.
And finally: in Singapore, and across much of Asia, there are cultural reasons ADHD in adults has been slow to surface in clinical settings. The conditions that get diagnosed are the conditions people think to seek help for. Anxiety and depression get sought. ADHD — especially adult ADHD — often doesn’t, until the adult realises the full picture.
What the adult presentation often looks like
There is no single adult ADHD picture, but there are patterns I see repeatedly. The hyperactivity from childhood — if it was ever there — has usually turned inward. What’s left is often:
Executive function failure that doesn’t match capability. Starting is the hard part. Finishing is the hard part. Transitioning between tasks feels physically effortful. Priorities flip. Deadlines approach and the task you need to do is the task you cannot make yourself begin. You are capable of excellent work, but you cannot reliably access that capability on demand.
Time blindness. An hour feels like ten minutes, and ten minutes feels like an hour. You are frequently late despite trying not to be. You misjudge how long things will take. You experience only two time zones: “now” and “not now.”
Emotional dysregulation and rejection sensitivity. Feedback that a peer would absorb lands hard. Criticism — real or perceived — echoes for days. Anger comes fast and passes fast. A well-studied feature of adult ADHD is what researchers increasingly call rejection sensitive dysphoria, which is not a separate diagnosis but a pattern of intense emotional reactivity to perceived disapproval.
Working memory that drops things. You walk into a room and can’t remember why. You’ve been told something three times and still can’t recall it. You make notes and then cannot find the notes.
Relationship patterns. Partners and close family members often experience you as inconsistent. You can be intensely present one day and distracted the next. You forget commitments you meant to keep. The emotional work of repair becomes chronic.
Chronic stress and the shadow of anxiety or depression. Most adults with ADHD have one or both. It is very often the anxiety or depression that brings them in for treatment, and the ADHD is discovered from underneath.
Adult ADHD assessment: what it should actually include
The assessment landscape for adult ADHD is uneven. Some practitioners will diagnose ADHD from a single questionnaire; others will not diagnose it at all. Neither is the standard of care.
Credible adult ADHD assessment involves:
A structured clinical interview covering developmental history, current functioning across life domains (work, finances, relationships, self-care, health), co-occurring conditions, and substance use. This is typically 90 to 120 minutes.
Retrospective symptom history. DSM-5 requires several ADHD symptoms to have been present before age twelve, though impairment can be later. I ask about childhood in detail — school reports if they’re available, memories of homework, teacher feedback, early social functioning. Often this is the most diagnostically important part of the interview.
Collateral information. With your consent, input from a parent, long-term partner, or close friend who has known you across contexts adds substantial diagnostic weight. I don’t require it, but I ask about it.
Standardised self-report scales. These usually include the ASRS (a WHO-developed screener), the CAARS (Conners Adult ADHD Rating Scale), and — when co-occurring conditions are possibilities — focused scales for anxiety, mood, and functional impairment.
Differential diagnosis. Adult attention problems can be ADHD, and they can also be anxiety, depression, sleep disorders, trauma, thyroid issues, substance use, or some combination. A useful assessment clarifies which of these are in play.
A written report with diagnostic findings, formulation, recommendations, and — if you’re considering medication consultation with a psychiatrist — the documentation that a psychiatrist will want in hand.
What I do not rely on as a stand-alone: online ADHD screeners, brief screening visits, or computerised attention tasks used in isolation. These can each contribute, but none of them are sufficient on their own for a diagnostic decision about something as consequential as ADHD.
Treatment: what the evidence supports
The treatment evidence for adult ADHD is stronger and more consistent than many adults who come to me assume. The two approaches with the most robust research support are cognitive-behavioural therapy adapted for adult ADHD (CBT-A) and medication — and most adults who do well, do well on some combination.
Cognitive-behavioural therapy for adult ADHD. CBT-A is not generic CBT. It’s a structured, skills-based approach with manualised protocols developed over the last two decades and with good randomised-trial evidence. It targets the specific functional problems of adult ADHD — procrastination, organisation, planning, working memory strategies, emotion regulation, and the cognitive distortions that often accumulate around chronic underperformance. It is concrete work. It is not only talking about feelings. It is building external scaffolding and internal reframes, both.
Treatment for co-occurring anxiety and mood. Most of my adult ADHD clients have co-occurring conditions, and treating those is often as important as treating the ADHD itself. For anxiety and OCD, I use exposure-based cognitive-behavioural therapy; I trained in this model under researchers who built its modern evidence base. For mood concerns, I use the cognitive and behavioural protocols with the strongest evidence — including the approaches developed by Dr. Lauren Alloy and Dr. Eric Youngstrom, under whom I trained directly.
Medication consultation. Medication is a decision for you and a psychiatrist to make together, and it’s one of the most effective classes of medication in all of psychiatry when well-matched to the individual. I don’t prescribe. I refer to psychiatrists I know and trust in Singapore, and I communicate with them directly with your consent. I will also be honest with you about when I think medication is worth considering and when a behavioural-only approach is likely to be enough.
Executive function coaching. For some adults, a more tactical, scaffolding-focused approach — weekly systems work, planning architecture, time-management protocols — is useful alongside therapy. This is something I build into the work when it’s what fits.
What I don’t offer: brain-training apps, neurofeedback, single-nutrient supplementation, or “ADHD-specific” lifestyle programs. I will not recommend what the research doesn’t support.
If you’re considering a late diagnosis
A large share of the adults I assess are coming in with a suspicion rather than a prior diagnosis. Often they’ve read something, recognised themselves, taken an online screener, and started wondering whether this is finally the explanation they’ve been missing. Sometimes a child or sibling has been recently diagnosed and the family history has become impossible to ignore.
The decision to pursue a formal assessment is a personal one. For some adults, the process of getting a proper diagnosis is clarifying and validating — it reframes decades of self-narrative in a way that unlocks change. For others, the diagnosis itself is less important than the treatment, and they simply want to get on with the work. Both paths are defensible. I’ll help you think through which one fits your situation.
One thing I’ll say directly: a late diagnosis is not a diagnosis you’re “too old” for. Adults in their thirties, forties, fifties, and sixties get clarity, get treatment, and see meaningful change. ADHD treatment at any age does not undo the years that came before, but it substantially changes the years that come after. That’s not a small thing.
Next steps
Request a consult and we’ll set up a 15-minute call. Tell me briefly what’s going on — what you’ve noticed, what you’ve tried, what you want to understand. If I’m the right person for what you need, we’ll plan the next step. If I’m not, I’ll tell you that honestly and point you toward someone who is — see my clinical-fit page for how I think about that.
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