Table 1.

Causes and manifestations of non-alcoholic Wernicke's encephalopathy in three psychiatric patients with Korsakoff syndrome.

Patient No.	Agea (years)	Cause of Wernicke's encephalopathy	Nutritional deficiency			Symptoms and signs of Wernicke's encephalopathy (Classic triad)
			Duration	Weight loss (kg)	Lowest BMI	Ocular	Unsteadiness/ataxia	Altered mental state or mild memory impairment
1b	33	Acute lymphatic leukemia	5 months	7c	16.9c	Impaired vision	Unsteadiness	Confusion, aberrant behavior, elevated mood, decreased need for sleep
2	38	Hyperthyroidism	6 months	26c	24.5c	N/A	Unsteadiness	Mild confusion
3	20	Diarrhea & vomiting	2 months	6c	17.8c	Impaired visionc, central skotomac	Unsteadiness	Depression “disappeared”, decreased need for sleepc

^aAge at the time of Wernicke's encephalopathy.

^bPatient 1 had also muscle weakness.

^cInformation from hospital records. N/A, Not available.