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  1. Reasons
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constitutes a violation of the memory function, characterized by a complete or partial loss of the ability to reproduce previously obtained information, past events or accumulate new knowledge.

Types of amnesia

There are two forms of retrograde disease (patient does not remember events that occurred before the illness) and anterograde (the patient does not remember events after the onset of the disease).

Retrograde amnesia

As a rule, does not affect events that occurred long in the past, i.e. the most frequent cases of memory loss about the last hours, or weeks, rarely months. The sign of recovery is usually the reduction of the period of lost memory, but the memory of the time immediately preceding the beginning of the disease, comes back very rarely.

Anterograde amnesia

Has unlimited period of lost memory, the duration of which is closely associated with the duration of post-traumatic stress disorder conscious activity. If anterograde memory loss has developed as a consequence of traumatic brain injury, the period of lost memory will depend on its severity.

There are other forms of amnesia are usually classified according to the reasons for the development of, for example, a protective form of the disease, displacing traumatic events from memory or post-hypnotic loss of ability to reproduce events in the state of hypnotic trance.

The researchers also reveal spontaneous memory loss (the causes of which are probably just not revealed), and Korsakoff’s syndrome (failure to record current events), which are formed as a result of the lack of vitamin B1.

Regardless of the form of the disease, in the recovery of the ability to assimilate new skills and new information returns the last memory returned by chronological order (starting with the most remote memories), but directly preceding the onset of the disease event, often never recovering.


Among the most common causes of amnesia can be distinguished in the first place, traumatic brain injury, emotional shock, tumors and strokes. However, the disease can be provoked by a number of other disorders, such as epilepsy, mental illness, degenerative brain disease, metabolic encephalopathic, intoxication and herpes encephalitis.

One example of psychogenic amnesia, for example, is the dissociative Fugue, which develops as a result of moving to a new place of residence or a complete change of scenery. The patient may be completely unable to remember his past for months or even years, he can suddenly remember again and to forget the individual events.

The reason for the development of another variety of the disease dissociated, is a temporary loss of memory of traumatic events (loss of loved ones, severe stress, shock), but the memory of other events and skill remains in order. Interestingly, when dissociated amnesia memory function is broken only in the waking state, while in an altered state of consciousness (sleep, trance, hypnosis), the patient may recover all of the events.


















Amnesia, the treatment of which is complicated by psychogenic nature of the disease or for the treatment neoprogressive forms of effective neuropsychological treatment. If the activity of the underlying disease and other provocateurs amnesia resolved, drug therapy focuses on increasing cholinergic transmission in the brain. For this prescribed drugs such as piracetam, gliatilin, or pyritinol encephabol, Cerebrolysin and Semax.