Dr Mahavishnu Sahadevan

Procedures Performed

• Electroencephalography (EEG) interpretation and reporting
• Nerve conduction studies (NCS) and electromyography (EMG)
• Lumbar puncture
• Botulinum toxin injections

Conditions Treated

• Multiple sclerosis
• Neuromyelitis optica spectrum disorder (NMOSD)
• Myasthenia gravis
• Other autoimmune neurological disorders
• Parkinson's disease and other movement disorders
• Epilepsy and seizure disorders
• Stroke and cerebrovascular disorders
• Neuromuscular disorders
• Peripheral neuropathies and other peripheral nerve disorders
• Headache disorders
• Neuro-ophthalmological disorders
• Dementia and cognitive disorders

Postgraduate Qualifications

• Fellowship in Autoimmune Neurology, Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom, 2023
• Fellowship in Neurology, Ministry of Health Malaysia, November 2023
• Fellow of the European Board of Neurology (FEBN), 2021
• Master of Medicine in Internal Medicine, University of Malaya, 2017

Medical School

• Bachelor of Medicine and Bachelor of Surgery (MBBS), Manipal Academy of Higher Education, India, 2005

Memberships & Associations

• Malaysian Medical Association
• Malaysian Society of Neuroscience
• Neuroimmunology Society Malaysia - Treasurer
• Functional Neurological Disorder Society - Founding Member
• European Stroke Organisation - Fellow (FESO)
• World Stroke Organization
• American Academy of Neurology
• European Academy of Neurology
• International Parkinson and Movement Disorder Society
• Multiple Sclerosis Society UK

Awards

• Excellent Service Award Ministry of Health Malaysia, 2013
• First place, poster presentation on Demyelination of Marchiafava-Bignami Disease, National Neuroimmunology and Neuroinfection Conference, 2024
• Second runner-up, poster presentation on Anti-GABA Receptor Encephalitis: An Unusual Cause of Confusion, National Neuroimmunology and Neuroinfection Conference, 2024

Media / Publications

• Contributor, The Malaysian Consensus Statements for the Diagnosis and Management of Neuromyelitis Optica Spectrum Disorder, 2026.
• Co-author, Executive Summary of the Malaysian consensus statements for the diagnosis and management of neuromyelitis optica spectrum disorder (NMOSD). Multiple Sclerosis and Related Disorders, 113:107380, 2026.
• Expert Reviewer, Malaysian Consensus for the Treatment of Multiple Sclerosis, 2025.
• Chief Reviewer, forthcoming Malaysian Clinical Practice Guidelines on Multiple Sclerosis (in development).
• Contributor, Handbook of Therapeutic Plasma Exchange for neurological disorders, Department of Neurology, Hospital Kuala Lumpur.
• Contributor, Myasthenia Gravis: A Manual for Healthcare Providers, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford University Hospitals.
• Contributor, Intravenous Immunoglobulin: Handbook for Healthcare Providers, Hospital Putrajaya.
• Selected research publications include Prevalence of extracranial carotid atherosclerosis in patients with coronary artery disease (Medicine, 2019), and Post COVID-19 vaccination acute motor axonal neuropathy (Journal of the Neurological Sciences, 2023).
• Publication Link 1 NMOSD consensus executive summary published in 2026
• Publication Link 2 Malaysian Consensus for the Treatment of Multiple Sclerosis 2025

Main Hospital

• Subang Jaya Medical Centre (SJMC)