This issue of Neurologic Clinics, edited by Dr. Darin T. Okuda, focuses on Multiple Sclerosis. Topics include, but are not limited to, Myelin and Axonal Repair Strategies in Multiple Sclerosis; Common Clinical and Imaging Conditions Misdiagnosed as Multiple Sclerosis; Topographical Model for Multiple Sclerosis: A Novel Approach to Understanding Clinical Phenotypes and Disease Activity; Incidental Anomalies Characteristic of CNS Demyelination: Radiologically Isolated Syndrome; Pediatric Multiple Sclerosis: From Recognition to Practical Clinical Management; Progressive Forms of Multiple Sclerosis: Distinct Entity or Time Dependent Phenomena; Advanced Symptom Management Strategies in Multiple Sclerosis, Ethnic Considerations and Multiple Sclerosis Disease Variability; The Dynamics of the Gut Microbiome in Multiple Sclerosis in Relation to Disease; Spinal Cord Imaging in Relation to Clinical Status in Multiple Sclerosis, and more.