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Case 23: - Attention Deficit Hyperactivity Disorder

from Part II: - Topical MCQs

Published online by Cambridge University Press:  04 September 2025

Howard CH Khoe
Affiliation:
National Psychiatry Residency Programme, Singapore
Cheryl WL Chang
Affiliation:
National University Hospital, Singapore
Cyrus SH Ho
Affiliation:
National University Hospital, Singapore
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Summary

Question 1: James is a three-year-old boy brought to the clinic for concerns over his behaviour. James appears ‘always on the go’ and does not interact with his younger brother. He has difficulties waiting his turn, which leads to conflicts with his peers. He does not appear to pay attention despite being spoken to directly. On examination in the clinic, you notice it is very difficult to sit James down in a chair. Physical examination is normal and developmentally appropriate for his age. What is the most likely diagnosis?

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