It may also include symptoms caused by alcohol withdrawal. The cause is generally attributed to malnutrition, especially lack of vitamin B1 (thiamine), which commonly accompanies habitual alcohol use or alcoholism.

Heavy alcohol use interferes with the metabolism of thiamine, so even in the unusual cases where alcoholics are eating a balanced diet while drinking heavily, the metabolic problem persists because most of the thiamine is not absorbed.

Korsakoff syndrome, or Korsakoff psychosis, tends to develop as Wernicke's symptoms diminish. It involves impairment of memory out of proportion to problems with other cognitive functions.

Patients often attempt to hide their poor memory by confabulating. The patient will create detailed, believable stories about experiences or situations to cover gaps in memory. This is not usually a deliberate attempt to deceive because the patient often believes what he is saying to be true. It can occur whether or not the thiamine deficiency was related to alcoholism and with other types of brain damage.

Korsakoff psychosis involves damage to areas of the brain involved with memory.

• Vision changes
  • Double vision
  • Eye movement abnormalities
  • Eyelid drooping
• Loss of muscle coordination
  • Unsteady, uncoordinated walking
• Loss of memory, can be profound
• Inability to form new memories
• Confabulation (making up stories)
• Hallucinations

• Examination of the nervous/muscular system may show polyneuropathy (damage to multiple nerve systems).
• Reflexes may be decreased (or of abnormal intensity), or abnormal reflexes may be present.
• Testing of gait and coordination indicates damage to portions of the brain that control muscle coordination.
• Muscles may be weak and may show atrophy (loss of tissue mass).
• Examination of the eyes shows abnormalities of eye movement.
• Blood pressure and body temperature measurement may be low.
• Pulse (heart rate) may be rapid.

The person may appear cachectic (malnourished). A nutritional assessment may confirm malnourished state.

• Serum B1 levels may be low.
• Pyruvate is elevated.
• Transketolase activity is decreased.

If the history is significant for chronic (long-term) alcohol abuse, serum or urine alcohol levels may be elevated (see toxicology screen) and liver enzymes may be elevated.

Other chronic conditions that may cause a thiamine deficiency include the following:

• AIDS
• Hyperemesis gravidarum (continuous nausea and vomiting during pregnancy)
• Thyrotoxicosis (very high thyroid hormone levels)
• Cancers that have spread throughout the body
• Long-term dialysis
• Congestive heart failure, when treated with long-term diuretic therapy

A brain MRI rarely shows changes in the tissue of the brain indicating Wernicke-Korsakoff syndrome.

The goals of treatment are to control symptoms as much as possible and to prevent progression of the disorder. Hospitalization is required for initial control of symptoms.

If the person is lethargic, unconscious, or comatose, monitoring and care appropriate to the condition may be required. The airway should be monitored and protected as appropriate.

Thiamine (vitamin B1) may improve symptoms of confusion or delirium, difficulties with vision and eye movement, and muscle incoordination. Vitamin B1 may be given by injection into a vein or a muscle, or by mouth.

Thiamine does not generally improve loss of memory and intellect associated with Korsakoff psychosis.

Total abstinence from alcohol is required to prevent progressive loss of brain function and damage to peripheral nerves. A well-balanced, nourishing diet is recommended.

Without treatment, Wernicke-Korsakoff syndrome progresses steadily to death. With treatment, symptoms (such as uncoordinated movement and vision difficulties) may be controlled, and progression of the disorder may be slowed or stopped.

Some symptoms -- particularly the loss of memory and cognitive skills -- may be permanent. There may be a need for custodial care if the loss of cognitive skills is severe.

Other disorders related to the abuse of alcohol may also be present.

• Permanent loss of memory
• Permanent loss of cognitive skills
• Injury caused by falls
• Difficulty with personal or social interaction
• Alcohol withdrawal state
• Permanent alcoholic neuropathy
• Shortened life span

Wernicke's encephalopathy may be precipitated in at-risk people by carbohydrate loading or glucose infusion. Supplementation with thiamine must precede glucose infusion to prevent this.

Call your health care provider if symptoms suggesting Wernicke-Korsakoff syndrome occur, or if the condition has been diagnosed and symptoms worsen or reappear.

Also call if new symptoms develop, particularly symptoms of alcohol withdrawal. Alcohol withdrawal can be fatal, so call the local emergency number (such as 911) or go to the emergency room if any severe symptoms occur.

Symptoms of alcohol withdrawal include:

Delirium or confusion

• Agitation
• Jumpiness or nervousness
• Insomnia
• Hallucinations
• Palpitations
• Heart rate that is faster than normal without an observable cause, such as:
  • Increased activity
  • Pale skin
  • Profuse sweating
  • Muscle tremors
  • Seizures
  • Headache
  • Fever
  • Nausea/vomiting