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Korsakoff syndrome (KS) [1] is a disorder of the central nervous system characterized by amnesia, deficits in explicit memory, and confabulation. This neurological disorder is caused by a deficiency of thiamine (vitamin B 1 ) in the brain, and it is typically associated with and exacerbated by the prolonged, excessive ingestion of alcohol . [ 2 ]
Diagnosis of Wernicke-Korsakoff syndrome is by clinical impression and can sometimes be confirmed by a formal neuropsychological assessment. Wernicke encephalopathy typically presents with ataxia and nystagmus , and Korsakoff's psychosis with anterograde and retrograde amnesia and confabulation upon relevant lines of questioning.
When it occurs simultaneously with alcoholic Korsakoff syndrome it is known as Wernicke–Korsakoff syndrome. [3] [4] Classically, Wernicke encephalopathy is characterised by a triad of symptoms: ophthalmoplegia, ataxia, and confusion. Around 10% of patients exhibit all three features, and other symptoms may also be present. [5]
This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria used to delineate various disorders and whether some of these conditions should be classified as ...
Symptoms of Wernicke–Korsakoff syndrome include confusion, amnesia, and impaired short-term memory. WKS also tends to impair the person's ability to learn new information or tasks. In addition, individuals often appear apathetic and inattentive and some may experience agitation.
RA has been found among alcohol-dependent patients who have Korsakoff's syndrome. [25] Korsakoff's syndrome patients develop retrograde amnesia due to a thiamine deficiency (lack of vitamin B1). [26] Also, chronic alcohol use disorders are associated with a decrease in the volume of the left and right hippocampus. [25]
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