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Dyskinetic CP — RACP Paediatrics MCQ

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ModerateNeurologyDyskinetic CPRACP Paediatrics

An 18-month-old has severe motor impairment affecting all four limbs equally. There are involuntary writhing and twisting movements that are more prominent with voluntary movement. MRI brain shows bilateral basal ganglia signal abnormality consistent with perinatal asphyxia. What is the most likely CP classification?

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Correct answer: D — Dyskinetic (dystonic) CP

Involuntary writhing/twisting movements (dystonia or athetosis) with bilateral basal ganglia injury on MRI is characteristic of dyskinetic CP. It is most commonly caused by acute near-total asphyxia affecting the deep grey matter structures. Intelligence may be relatively preserved despite severe motor impairment.

Reference: RCH Melbourne – 2023 – Cerebral Palsy CPG; RACP Paediatric Curriculum – Neurology