Brain injury
Wernicke–Korsakoff syndrome

Wernicke–Korsakoff syndrome can cause brain damage and results from a Vitamin B deficiency (specifically vitamin B1, thiamine). This syndrome presents with two conditions, Wernicke's encephalopathy and Korsakoff psychosis. Typically Wernicke's encephalopathy precedes symptoms of Korsakoff psychosis. Wernicke's encephalopathy results from focal accumulation of lactic acid, causing problems with vision, coordination, and balance.

Korsakoff psychosis typically follows after the symptoms of Wernicke's decrease. Wernicke-Korsakoff syndrome is typically caused by conditions causing thiamine deficiency, such as chronic heavy alcohol use or by conditions that affect nutritional absorption, including colon cancer, eating disorders and gastric bypass.
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