Korsakov

Korsakov is a Russian surname transliterated from the Cyrillic Корсаков and, in some cases, a place name. Notable bearers include Nikolai Rimsky-Korsakov (1844–1908), a prominent Russian composer of the Romantic era, and Sergei S. Korsakoff (1854–1900), a Russian neuropsychiatrist who described Korsakoff's syndrome.

Korsakov is also the name of a town and the administrative center of Korsakovsky District in Sakhalin Oblast, Russia. It is located on Sakhalin Island along the coast of the Sea of Okhotsk and functions as a regional administrative and transport hub.

Korsakoff syndrome, named after Sergei Korsakoff, is a chronic memory disorder resulting from severe thiamine (vitamin B1) deficiency, typically linked to alcohol misuse or malnutrition. It often occurs in conjunction with Wernicke encephalopathy and is characterized by impaired short-term memory, confabulation, and other cognitive deficits. The term is sometimes used in reference to the broader Wernicke–Korsakoff syndrome.