Wernicke-Korsakoff Syndrome: A Care Staff Guide

Wernicke encephalopathy and Korsakoff syndrome are two stages of the same problem: a serious shortage of thiamine (vitamin B1) affecting the brain. The first is an acute medical emergency. The second is a long-term condition that can follow if the emergency is missed or under-treated. Because the early signs can look like drunkenness, delirium or "just confusion", the people most likely to notice them are often care, support and ward staff rather than doctors. This guide explains what to look for, why speed matters and how to support someone living with the long-term effects.

Wernicke encephalopathy: the emergency

The classic description is a triad of eye movement problems (ophthalmoplegia), unsteadiness (ataxia) and a change in mental state. A clinical review published in the Primary Care Companion for CNS Disorders notes that the full triad is present in only about 10% to 16% of cases, so staff should not wait for all three signs before raising concern. The same review reports that alcohol misuse is behind up to 90% of cases, and that the condition is also seen after gastric bypass or other gut surgery, with prolonged vomiting, in malnourished people, in people on haemodialysis and in some cancers and HIV-related illness. In other words, risk is not limited to people who drink.

What staff may notice: new confusion or drowsiness, difficulty walking or standing, a wobbly or wide-based gait, double vision or unusual eye movements, and general neglect of nutrition. If you suspect it, treat it as an emergency. The same review warns that missed cases can lead to permanent brain damage, long-term institutional care and death, and that a large share of cases have historically only been identified after death.

Why thiamine is time-critical

Thiamine replacement is the treatment, and the review is clear that oral thiamine alone is not adequate to prevent permanent brain damage in suspected Wernicke encephalopathy; injections given into a vein are needed. Exact doses and schedules differ between guidelines, for example between the Royal College of Physicians in the UK and European neurology guidance, and they are set by the treating clinician. Care staff do not give or adjust this treatment. Their job is to recognise the risk, call 999 or the emergency team, and make sure the clinician knows about drinking history, poor intake or recent vomiting. NICE's guidance on alcohol use disorders also says that people thought to have, or be at high risk of, Wernicke encephalopathy should be offered thiamine, and that those with alcohol-related liver disease, people undergoing planned alcohol withdrawal in specialist settings and some people in prison with poor nutrition may receive thiamine to prevent Wernicke-Korsakoff syndrome.

Korsakoff syndrome: the long-term picture

Korsakoff syndrome is the chronic form. The review states that around 84% of people who survive an acute Wernicke episode without adequate treatment go on to develop Korsakoff psychosis. The defining feature is severe memory impairment, especially the ability to form new memories, while other abilities can be relatively preserved. People may confabulate, meaning they fill gaps in memory with plausible but inaccurate accounts without any intention to deceive. They can also have problems with planning, motivation and insight.

That mix often surprises families and new staff. A person may talk fluently and appear well, yet be unable to remember what happened an hour ago or to manage their own money and medicines safely.

Supporting a person with Korsakoff syndrome

• Keep routines predictable. Consistent timetables, familiar faces and visual prompts help more than repeated verbal reminders.
• Do not argue with confabulation. Gently redirect rather than correcting, and avoid treating it as lying.
• Support nutrition and hydration. Recovery depends partly on a good diet and continued thiamine as advised by the clinician.
• Plan for alcohol. Many people are best supported in an alcohol-free environment, and some need specialist services. See our guide to alcohol-related harm in care settings.
• Use the Mental Capacity Act. Decisions about finances, medicines and where to live must be assessed decision by decision, and any restrictions must be lawful. See Mental Capacity Act and DoLS training.

Telling it apart from delirium and dementia

New confusion has many causes. A quick structured screen such as the 4AT delirium screening tool can help staff describe what they see to a clinician, but it does not exclude Wernicke encephalopathy. If someone has risk factors and new confusion, unsteadiness or abnormal eye movements, the safe default is to escalate urgently and say the words "possible Wernicke's" when you call.

Prevention in practice

Prevention is mostly about noticing risk early. Practical steps include recording poor intake, repeated vomiting and weight loss; flagging a history of heavy drinking at admission; making sure medicines reconciliation captures any prescribed thiamine; and making sure out-of-hours teams know the person's risk. For services working with people who drink heavily, protocols that specify who may give thiamine, and when, are worth reviewing against current NICE advice.

Frequently asked questions

Is Korsakoff syndrome the same as dementia?

No. It is caused by thiamine deficiency and has a different pattern of memory loss from most dementias, although some people have both. Assessment by a specialist team is important.

Can people recover?

Some improvement is possible with treatment, nutrition and abstinence from alcohol, but outcomes vary and some people need long-term support. Avoid promising a particular outcome.

What training helps?

Recognising deterioration, nutrition screening and capacity-based care planning are all relevant. Explore healthcare options in the Learnsignal CPD hub.

Sources: Primary Care Companion for CNS Disorders, review of Wernicke encephalopathy diagnosis and treatment; NICE guidance on alcohol-use disorders (CG115) public information. This article is general information, not medical advice.