MRI Revelations in Dyke-Davidoff-Masson Syndrome: Understanding Hemiatrophy through Imaging

A 22-year-old male presented with involuntary limb movements for two days, characterised by pronation-supination of the upper limbs. The patient had a history of perinatal hypoxic-ischaemic insult, as reported by his family. He had epilepsy for the past eight years and was on regular carbamazepine therapy, previously at a maintenance dose of 20 mg/kg/day, divided into two doses. Despite medication, he continued to experience breakthrough seizures approximately every 2-3 months.