Kazuo Fujihara is a Professor in the Department of Multiple Sclerosis Therapeutics at the Fukushima Medical University School of Medicine and the Director of Multiple Sclerosis & Neuromyelitis Optica Center, Southern TOHOKU Research Institute for Neuroscience (STRINS), Koriyama, Japan. Dr. Fujihara is a neurologist and has mainly worked in the field of multiple sclerosis (MS), neuromyelitis optica (NMO) and related neuro-immunological disorders. He is a member of the International Panel on Diagnosis of MS (the 2010 and 2017 revisions to the McDonald Criteria) and the International Panel on NMO Diagnosis (the 2015 International Consensus Diagnostic Criteria of NMOSD). Since 2013, he has served on the Executive Committee of the International Medical and Scientific Board of The Multiple Sclerosis International Federation (MSIF) and the Board of European Charcot Foundation (ECF). He is an inaugural member and the President (2018~) of the Pan-Asian Committee for Treatment and Research in Multiple Sclerosis (PACTRIMS), an honorary member of The Association of Sri Lankan Neurologists (Honorary Member, 2012~), Indian Academy of Neurology (Honorary Corresponding Member, 2015~) and Hong Kong Society of Multiple Sclerosis (Honorary Fellow, 2015~), an Editorial Board member of Neurology: Neuroimmunology and Neuroinflammation (2018~), and the Associate Editor of Frontiers in Neurology (section Multiple Sclerosis and Neuroimmunology, 2017~).