The article provides an overview of data on isolated demyelination syndromes that may precede multiple sclerosis, and on the peculiarities of the so-called "benign" form of multiple sclerosis. Clinical and anamnestic criteria for establishing the fact of a "benign" form of multiple sclerosis are presented, as well as trends in the number of these patients in the general population of patients with multiple sclerosis, including in connection with the improvement of treatment methods for this disease.</p
