Korsakoff Syndrome

Korsakoff syndrome is the chronic amnestic syndrome that can follow severe thiamine deficiency, most often in the setting of alcohol use disorder, malnutrition, or inadequately treated Wernicke encephalopathy. The central problem is not simply disorientation: the patient may be unable to store new explicit memories while still speaking fluently and performing familiar motor skills. That mismatch creates a serious safety risk. A patient may appear socially capable, agree with instructions, and then have no memory of the conversation minutes later. The nurse must therefore assess both the established memory disorder and whether active Wernicke encephalopathy is still present. The acute phase is treatable; prompt parenteral thiamine can prevent additional neuronal injury, whereas recovery from established Korsakoff damage is often incomplete.