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Amo Resumos · Clinical Manual 2026

The Clinician's Guide to ADHD Diagnosis Clinicians Residents Medical Students Psychologists

From the DSM criteria to the rating scale. Every presentation, at every age.

Cover of The ADHD Diagnostic Guide
Every DSM criterion, A through E, spelled out The three presentations, side by side Myth against evidence, chapter by chapter How it looks at every age, including in women Rating scales and the directed mental status exam
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Page from The ADHD Diagnostic Guide
Criteria, not impressionsCriterion A1 and A2 symptom by symptom, then B through E, with the cut-offs that change by age.
Page from The ADHD Diagnostic Guide
Three presentationsPredominantly inattentive, predominantly hyperactive-impulsive and combined, with the specifiers and severity.
Page from The ADHD Diagnostic Guide
The whole lifespanPreschool, school age, adolescence, adulthood and the elderly, each with what actually shows up in the room.
Page from The ADHD Diagnostic Guide
The presentation most often missedA full chapter on ADHD in women, and why it goes unrecognised for years.

The patient is in front of you. Now what?

Check the ones you have already lived through:

  • Suspected ADHD but could not say which presentation you were looking at
  • Struggled to separate inattention from anxiety in the same patient
  • Were unsure whether the symptoms really started before age twelve
  • Had an adult in front of you and only knew the childhood criteria
  • Saw a girl doing fine at school and let the inattention pass
  • Needed a rating scale on the spot and did not have one at hand

This manual is for you.

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Built the way you actually work

Every chapter takes you from what you observe to what you do about it. You open the manual on the question in front of you and leave the room with an answer.
How the manual is organised
Always in the same order, from the first chapter to the last.
1
What it is
The construct, the epidemiology and the neurobiology behind the diagnosis
2
The criteria
Criterion A1 and A2 symptom by symptom, then B through E, and the ICD-11 crosswalk
3
Across the lifespan
Preschool, school age, adolescent, adult, women and the elderly
4
The workup
History taking, the directed mental status exam and the rating scales
1
Criteria you can apply in the room
Every DSM item written out, with the symptom count that changes at seventeen and the requirements for age of onset, settings, impairment and exclusion.
2
Myth against evidence
A dedicated chapter that puts each common claim against what the literature actually supports, plus the genetics and neurobiology.
3
Instruments, not guesswork
The SNAP and the other scales that belong in the workup, with what each one can and cannot tell you.
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Keep The ADHD Diagnostic Guide within reach and stop guessing. You look it up the moment you need it, and you walk into every assessment with more confidence.

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Amo Resumos A Brazilian medical education publisher. Since 2021 we have produced illustrated study material for students and clinicians, with more than 80,000 copies sold in Brazil and abroad.

Everything you will find inside the manual

21 chapters. Click any of them to see what it covers.

The construct, how it is defined today and what separates it from ordinary inattention.

Prevalence across age groups, and what the population studies actually found.

The circuits and neurotransmitters involved, at the level a clinician needs.

Heritability, family aggregation and what to tell a parent who asks.

The claims that keep circulating, each one against the literature.

All nine symptoms, the count required, and the six-month rule.

The nine items, and how they change as the patient grows up.

Inattentive, hyperactive-impulsive and combined, and how presentation shifts over time.

Age of onset, two settings, impairment and the exclusions you must rule out.

Partial remission, mild, moderate and severe, and how to record it.

How the same patient is coded in each system.

What changes after seventeen and how to document retrospective onset.

What is age-appropriate, what is not, and why diagnosis here demands caution.

The classic presentation, and the academic signals that bring them in.

Hyperactivity turning inward, risk behaviour and the drop in supervision.

Executive complaints, work and relationships, and the comorbidity that masks it.

Why it is missed, how it presents, and what to ask.

Late recognition and the differential against cognitive decline.

The interview that supports the diagnosis, and the collateral you need.

What to look for and how to record it.

The SNAP and the others, with scoring and what a positive screen means.

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If within 7 days you feel the manual did not help you, we refund 100% of your investment. No questions asked.

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Frequently asked questions

No. The manual builds from the construct and the epidemiology up to the criteria, so you can follow it whether you are a student, a generalist or a specialist.

Both. The criteria are laid out in full and there is a dedicated chapter crosswalking them to ICD-11.

Yes. There are separate chapters for adolescence, adulthood, women and the elderly, on top of the paediatric presentations.

This edition is focused on diagnosis: recognising, classifying and documenting ADHD. Treatment is not its subject.

As soon as payment is confirmed the download link goes to your email. It is a high-resolution PDF you can read anywhere or print.

You have 7 days to review it. If it is not for you, we refund 100%, no questions asked.