Wernicke Encephalopathy: Symptoms, Causes, Treatment

The classic three signs do not always occur together. Waiting for confusion, abnormal walking and eye-movement changes simultaneously can delay care and allow lasting memory injury.

Related reading: Korsakoff syndrome and thiamine-related memory injury.

Confusion, drowsiness, poor balance, unsteady walking, double vision or abnormal eye movements may occur. Low temperature or blood pressure and incomplete presentations are possible.

Poor nutrition, prolonged vomiting including severe pregnancy sickness, malabsorption, bariatric surgery or alcohol-use disorder can reduce thiamine intake, absorption or availability.

Prolonged nutritional deficiency, malabsorption, severe vomiting, chronic alcohol use and some serious illnesses increase risk. An apparently normal body weight does not exclude thiamine deficiency.

Diagnosis relies on clinical suspicion, nutritional history and examination while excluding alternatives. Tests or imaging can help, but normal results do not exclude it and should not delay treatment.

Clinicians promptly give injected thiamine and correct magnesium, fluids and nutrition as needed. Dangerous hypoglycemia must not wait for thiamine; supplementation is given promptly alongside or appropriately around urgent glucose treatment.

Coma, death or persistent Korsakoff memory impairment can follow. Some symptoms improve rapidly and others slowly; incomplete recovery requires continuing assessment and rehabilitation.

Malnutrition, persistent vomiting and bariatric surgery warrant nutritional monitoring and individualized supplements. Alcohol dependence requires a medically planned recovery approach because abrupt withdrawal can be dangerous.