When It Rains It Pours...: Wernicke Encephalopathy with Sudden Blindness after Bariatric Surgery in a Patient with Congenital Deafness.

BACKGROUND

Malabsorption syndromes are known chronic complications of bariatric surgery. Therefore, it is recommended to take oral supplementation with multivitamins. Wernicke's encephalopathy represents an acute neuropsychiatric syndrome associated with alcoholism or severe malnutrition; sporadic cases of this potential complication related to bariatric surgery are described in the literature. We present a case of Wernicke's encephalopathy due to severe vitamin B1 deficiency after bariatric surgery.

CASE REPORT

A 31-year-old woman with deaf-mutism from the age of 3 years old, operated 3 months before with a mini-gastric bypass for severe obesity, was transferred to our unit after accessing the emergency room. In the immediate medical history, there was the sudden and rapid decline in vision, leading to complete loss of vision, marked asthenia, and paresthesia in the four limbs. Considering the previous bariatric surgery, the diagnosis of non-alcoholic Wernicke's syndrome was suspected, for which IV therapy with Vitamin B1 was started at a dosage of 5 vials of 200 mg in 100 cc of saline solution (three times a day for the first 72 hours, subsequently 1 once/day). After 12 hours, there was an improvement in visual acuity, and the symptoms completely resolved within 48 hours. She was discharged with complete resolution of all symptoms after 1 month.

CONCLUSION

Initial vision loss without confusion or encephalopathy is one atypical presentation of Wernicke syndrome. Clinical suspicion must be high in case of alcoholism or post-bariatric surgery. Early recognition of atypical symptoms, including vision loss, and timely administration of therapy improves the prognosis of this potentially reversible but time-dependent neurological emergency.

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