Karl Keow Ng

Karl Keow Ng is a Conjoint Associate Professor (Neurology) in the Northern Clinical School, Sydney Medical School, University of Sydney. He holds the position of Senior Staff Specialist Neurologist and Director of Clinical Neurophysiology at Royal North Shore Hospital, Northern Sydney Local Health District. Additionally, he directs Sydney North Neurology and Neurophysiology, overseeing specialized clinics for headache and hyperhidrosis. Ng earned his MBBS with First Class Honours from the University of New South Wales and a PhD from the University of Sydney, with his doctoral research examining peripheral axonal excitability in peripheral and central neurological disorders, including multiple sclerosis. He completed neurology training accredited by the Royal Australasian College of Physicians and undertook three years of advanced post-fellowship training in clinical neurophysiology at the National Hospital for Neurology and Neurosurgery, Queen Square, University College London, achieving UK accreditation in clinical neurophysiology. Ng is a Fellow of the Royal College of Physicians (London) and the Royal Australasian College of Physicians.

His academic interests focus on nerve and muscle excitability, with applications to conditions such as amyotrophic lateral sclerosis, migraine, hereditary spastic paraplegia, and cortical hyperexcitability in neurodegenerative diseases. He has supervised doctoral students in nerve and muscle excitability research and contributed to advancements like bringing nerve excitability testing into clinical practice. Ng has published over 100 articles in international peer-reviewed journals, including 'Sarcolemmal Excitability Properties of the Trapezius' (2025), 'Bringing nerve excitability out of the research laboratory into the clinic' (2022), 'Comprehensive genetic diagnosis of tandem repeat expansion disorders using a hybrid capture-based workflow' (2022), 'Cortical hyperexcitability evolves with disease progression in ALS' (2020), and 'Functional Biomarkers for Amyotrophic Lateral Sclerosis' (2019). He serves as Editor-in-Chief of BMJ Neurology Open and Neurology Subeditor of the Internal Medicine Journal, and acts as an invited reviewer for leading neurological societies. Ng has held roles as former board director of the Brain Foundation, NSW representative for the Australian and New Zealand Headache Society, and councillor for the Australian and New Zealand Association of Neurologists, including organizing neurophysiology training conferences and delivering talks at international meetings.

Professional Email: karl.ng@sydney.edu.au