ICD10: F10.6. The Korsakov-Syndrome describes a most severe, irreversible form of brain damage caused by alcohol, so-called to honor the russian psychiatrist Korsakov (other spelling: Korsakoff), who described it already in 1887. It is the chronic form of the Wernicke encephalopathy, characterized by extensive loss of orientation and memory due dying of entire regions of brain cells in the brain between the Limbic system and, in particular, on the short-term memory region. It is characterised by the occurrence of confabulation, which means, that existing memory gaps will be replaced by spontaneous ideas not corresponding to the reality.
The apperance of both symptoms, Korsakov syndrome and Wernicke encephalopathy, is known as Korsakov-Wernicke syndrome.
Similar symptoms also applies to the non-alcoholic Korsakov syndrome (ICD10: F04), which can occur by brain damage caused by lack of oxygen or injuries.
Incurred by other psychotropic substances ICD10: F11.06 to F19.06