Wernicke-Korsakoff Syndrome (Wet Brain): Symptoms and Treatment

Last Updated: May 10, 2024

Nena Messina Authored by Nena Messina, Ph.D.
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Wet brain, also known as Wernicke-Korsakoff syndrome (WKS), results from brain damage due to severe thiamine or vitamin B1 deficiency. This condition usually progresses in two stages if left untreated – the first stage is Wernicke encephalopathy, and the second stage is Korsakoff syndrome, AKA Korsakoff psychosis. Read along further to find details about wet brain syndrome, its causes, WKS signs and symptoms, and the treatment and prognosis of wet brain syndrome.

What is Wernicke-Korsakoff Syndrome or Wet Brain?

One might have seen them on the street. Walking unsteadily. Slurred speech. Eyeballs are moving unnaturally as if they have no control over them. Violent muscle twitches. Mental confusion. Mumbling about events that are figments of the imagination. This is not a person who has had one drink too many the night before. It is an alcoholic who is probably suffering from wet brain syndrome. Alcoholics present a sorry sight, but the reality is grimmer. If this disease is not treated, it is possible to die from it.

According to the NIH, Wernicke-Korsakoff syndrome is a type of brain damage caused by a severe thiamine deficiency or vitamin B1 deficiency. It is named after Dr. Wernicke and Dr. Korsakoff, who identified the symptoms of the disease.

WKF is known to occur in people who have alcoholic dementia. It is a complex syndrome that consists of Wernicke’s encephalopathy and Korsakoff psychosis acting successively:

  • The first stage of the disease, Wernicke’s encephalopathy (WE), is acute and damages the brain’s lower parts, including the thalamus and hypothalamus. This damage is reversible if the patient receives prompt treatment.
  • The second stage of the disease, Korsakoff psychosis (KP), is a chronic state of permanent brain damage that affects memory, cognitive functions, and nerves. The symptoms of this stage are triggered if Wernicke encephalopathy is not treated promptly or is left untreated.
Woman wearing brainwave scanning headset.

Wet Brain Statistics

Wernicke’s encephalopathy and WKS are most commonly seen in people with an alcohol use disorder. WKS has been shown to have a low prevalence based on the reported cases found in autopsies. However, it is estimated that many of its cases go undiagnosed and are under-reported. The prevalence rate is higher in certain populations such as homeless people, older population, and psychiatric patients, all of who have poor nutritional states and increased alcohol use. This disorder is more prevalent in males than females, whereas the age of onset is distributed from 30-70 years.

A study declared that only 20% of Wernicke-Korsakoff syndrome cases are diagnosed properly, whereas many remain undiagnosed. This failure in diagnosis and treatment results in death for 20% of the patients, leading to permanent brain damage in 75% of them. 25% of the individuals require inpatient treatment and rehabilitation to receive effective care and support since they are usually the ones who have comorbidity in more than one domain. NCBI study said that only 1-20% of the cases are clinically diagnosed, whereas up to 80% are found on post mortem examination of the brains.

Causes of Wet Brain Syndrome

The main cause of Vitamin B1 deficiency is severe and long-term alcohol addiction. As time progresses, it affects how alcohol is absorbed, stored, and used in the body, which can cause wet brain syndrome. However, certain other causes of this disorder occur when a person does not get enough nutrients from their diet or because of other health conditions.

These Causes Include:

  • Diseases that affect the whole body like AIDS, cancer, infections, and other disorders
  • Eating disorders like anorexia, bulimia, etc
  • Kidney problems
  • Individuals receiving chemotherapy
  • Certain stomach and intestinal problems
  • Excessive and long-term vomiting
  • Weight loss surgery or gastric bypass
  • Infants breastfed by mothers with inadequate thiamine intake

Risk Factors For Wernicke-Korsakoff Syndrome

The risk factors for wet brain mainly depend on diet and lifestyle. Malnourishment and alcohol abuse are the contributing factors that can put a person at risk of developing wet brain syndrome. However, there are some other risk factors as well, which are listed below:

  • Men are more at risk to develop this as compared to women
  • Unaffordability of nutritious food and medical care
  • Severe kidney problems or people on dialysis reduces the absorption of Vitamin B-1
  • Individuals suffering from AIDS
  • According to this research, prolonged glucose intake by someone who has thiamine deficiency increases his risk of developing Wernicke-Korsakoff syndrome. Another study indicated that prolonged glucose supplementation without the addition of thiamine could be a risk factor for developing Wernicke’s encephalopathy.
  • Individuals in the age group of 45-65 are more at risk.
  • People with severe mental health conditions are also at increased risk.
Doctor talking to the senior man.

Why is Thiamine Deficiency Common in Alcoholics?

Thiamine deficiency is common among alcoholics because of their poor eating habits. Even when alcoholics don’t avoid eating, consuming large amounts of alcohol regularly can cause the body to have difficulty absorbing thiamine. According to a publication by the U.S. Department of Health and Human Services, alcohol impairs the body’s ability to absorb thiamine from food sources. Therefore, wet brain disease is higher in alcoholics because of the peculiar way sugar acts on the thiamine-deficient brain.

Thiamine deficiency can also occur in non-alcoholics; this condition is called Beriberi. It is of two major types: wet Beriberi, which affects the cardiovascular system, and dry Beriberi, affecting the nervous system. Usually, if a person eats a well-balanced, healthy, and regular diet, they should get enough thiamine and save themselves from Beriberi.

Korsakoff Syndrome Symptoms

There are certain symptoms of a wet brain that may even be long-lasting or permanent. These symptoms should be distinguished from the acute effects of increased alcohol consumption or during ethanol withdrawal.

The Typical Symptoms of Wernicke’s Encephalopathy Are:

  • Mental confusion
  • Loss of muscle coordination
  • Vision problems like unnatural eye movements
  • Drooping of the eyelids
  • Double vision
  • Loss of psychic abilities
  • Amnesia (a gap in the memory)
  • Impaired short-term memory
  • Leg tremors
  • Agitation
  • Apathetic or inattentive behavior
  • Inability to learn new information
  • Diminishing of fine motor functions
  • Changes in the sense of smell
  • Coma (in advance stages)

As Wernicke Encephalopathy symptoms go away, the patient tends to develop Korsakoff psychosis (KP). Wernicke Encephalopathy causes brain damage in the lower parts of the brain (thalamus and hypothalamus). This results in permanent damage to areas of the brain involved with memory causing psychosis.

Its Typical Symptoms Include the Following:

  • Auditory and visual hallucinations
  • Inability to form new memories
  • Severe memory loss
  • Making up stories or exaggerating to counter the memory loss
  • Difficulty putting words into context
  • Difficulty understanding the meaning of information

Dr. Wernicke discovered that alcohol addiction causes thiamine deficiency that, in turn, adversely affects the nervous system, brain, muscles, heart, and gastrointestinal system. Dr. Korsakoff identified these symptoms while exploring memory disturbance and loss in alcoholics.

How is Wernicke-Korsakoff Syndrome Diagnosed?

A doctor can diagnose WKS by checking the patient for certain signs as well as some other tests. Blood alcohol levels should be checked along with a liver function test to determine if liver damage has occurred due to alcohol addiction.

A Doctor May Also Look at the Following Signs to Check for Chronic Alcoholism:

Apart from these, the doctor may order some blood tests to check for any malnourishment. These include:

  • Serum Albumin Test can be ordered to check albumin levels (a protein in the blood). Its low levels can indicate malnourishment as well as kidney and liver problems.
  • Serum Vitamin B-1 Test checks for the levels of Vitamin B-1 in the blood to check for its deficiency.
  • An Electrocardiogram (ECG) or EKG may be ordered before and after taking Vitamin B-1 to check for abnormalities in its absorption.
  • A CT Scan can also be carried out to check for brain lesions related to Wernicke’s disease.
  • An MRI Scan can also help the doctor to look for brain changes related to Wernicke’s disease.
  • A neuropsychological test can also be carried out to determine the severity of any mental deficiencies.
  • Transketolase activity in red blood cells may be checked in a patient to look for thiamine deficiency.

How is WKS Treated?

According to the findings of this research, the gold standard of treating Wernicke encephalopathy, 500 mg thiamine hydrochloride with normal saline, should be given to patients with acute Wernicke encephalopathy thrice daily for at least three days. The thiamine should be administered intravenously. Human body can use only 5 percent of the thiamine taken orally, whereas IV thiamine has 100 percent bioavailability.

This is to be followed by 250 mg of thiamine hydrochloride in regular saline once daily for three more days. An oral thiamine course should accompany IV therapy. Comatose, lethargic, or unconscious patients should be treated at a medical facility where their vitals can be continuously monitored.

According to the research, hypoglycemic patients should be administered glucose urgently to prevent them from going into a coma. But thiamine MUST be delivered to them as soon as their blood sugar levels normalize.

Sometimes, patients may need to stay in the hospital to help control their symptoms. Monitoring and special care may be needed if the person is:

  • Lethargic
  • Unconscious
  • In a coma

What is the Wet Brain Prognosis?

The prognosis for patients in both stages of Wet Brain disease is different. This is discussed below:

Prognosis of Wernicke’s Encephalopathy

Fortunately, most symptoms of Wernicke encephalopathy, like vision and speech problems, uncontrolled muscle movements, unsteady gait, and confusion, or delirium, can be slowed, stopped, or reversed if treated promptly with thiamine supplementation.

Here is a case study that demonstrates how intensive thiamine replacement therapy can manage and improve the symptoms of Wernicke encephalopathy and help an individual regain most of his physical and cognitive functionalities.

The untreated alcoholic wet brain syndrome can trigger complications like permanent alcoholic neuropathy that causes a host of symptoms like problems in swallowing and talking, uncoordinated muscle movements, impotence, nausea and vomiting, urine incontinence, and constipation or diarrhea.

Prognosis of Korsakoff Psychosis

Untreated Wernicke encephalopathy progresses to Korsakoff psychosis. Unfortunately, the prognosis is grim for a family of individuals who have developed psychosis. Symptoms like memory loss and loss of mental abilities are usually permanent. Death is not uncommon because of Korsakoff syndrome. The severe brain damage developed into KP leads to cognitive decline and dementia in thiamine deficiency alcoholism. The final stages of the disease are coma and, ultimately, premature death.


WKS MUST be treated urgently, else the symptoms cannot be reversed, and worse, the individual usually dies. The death rate for Wernicke-Korsakoff syndrome is about 10% to 20%.


As many as 25% of WKS patients require continued medical care and support as they develop other complications.

These Include the Following:

  • Ocular Complications – some patients develop ocular abnormalities, which usually resolve after administration of thiamine doses. In some cases, some conditions may persist for months that include vertical nystagmus, horizontal nystagmus, sixth nerve palsies, ptosis, and vertical-gaze palsies.
  • Ataxic Complications – these include gait abnormalities and vestibular dysfunction. Almost 40%of the patients recover from these in varying degrees.
  • Psychiatric Complications – global confusion state, amnestic state, learning, and memory impairment are some of the mental status complications which may take more than a year to resolve after treatment and abstinence from alcohol.
Answering question about risk of Wernicke-korsakoff syndrome.

How Long Does WKS Treatment and Recovery Last?

A wet brain should ideally be treated at all stages at a medical facility where doctors can monitor symptoms and administer drugs accordingly. The cost of treatment depends on the length of stay in the hospital. The duration, in turn, depends on the severity of symptoms.

Sometimes patients with alcohol-induced thiamine deficiency and mild symptoms of Wernicke encephalopathy are discharged within a week after administering IV thiamine. Patients who have developed KP require longer stays and extensive physical and cognitive rehabilitation to improve symptoms like uncoordinated muscle movement and mental confusion. The hospital stay duration also increases if patients have complications like malnutrition, liver damage, and cardiovascular disease.

After being treated for thiamine deficiency, some patients are discharged to be cared for in a nursing home. These are alcoholics in recovery who may need help eating, walking, or bathing.

At other times, patients who exhibit psychiatric disorders like alcoholic wet brain-related dementia are admitted to a specialty psychiatric treatment unit.

Preventing WKS

There are a few lifestyle tips that one can adopt to prevent this Wernicke-korsakoff syndrome. These Include the Following:

  • The most important tip is not to drink alcohol.
  • Eat a well-balanced and healthy diet.
  • Eat foods that are rich in thiamine or Vitamin B-1, such as peas, soy beans, lima beans, yeast extract, seeds of pumpkin, sunflower and chia, nuts, pork, poultry, peas, asparagus, whole grains, oranges, spinach, and milk.
  • After leaving the hospital for treatment of a wet brain syndrome, one must join a support group to prevent relapse in the future.

Staying Safe

Wernicke-Korsakoff syndrome treatment to improve prognosis can be lengthy and costly because thiamine deficiency alcoholism manifests as a clutch of co-occurring symptoms. Therefore, it is imperative that physicians, along with those who drink heavily and their loved ones, learn to identify the signs of Korsakoff syndrome and contact rehab centers to seek treatment immediately.

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Page Sources

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  8. Esteban Schabelman, Dick Kuo, Glucose before thiamine for Wernicke encephalopathy: a literature review, 2012, http://www.ncbi.nlm.nih.gov/pubmed/22104258
  9. Wernicke-Korsakoff Syndrome Information Page, https://www.ninds.nih.gov/Disorders/All-Disorders/Wernicke-Korsakoff-Syndrome-Information-Page
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Published on: March 9th, 2018

Updated on: May 10th, 2024

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