Amnesia is a psychological term that describes memory loss, that is, a condition in which a person cannot remember events, information or facts that happened in his past. Possibly due to a serious head injury or illness, or as a result of drug or alcohol use.
In medicine, amnesia is often called a "crisis" because it can be one of the first signs of catastrophic changes in the brain, such as stroke or Alzheimer's disease. During this psychological illness, a person may forget recently occurring events for a long period of time, and may miss days, weeks, even years in his present and his own memories.
Progressive amnesia is often caused by diseases of the central nervous system, such as Alzheimer's disease and other degenerative diseases of the central nervous system. This disease is based on a brain disorder that gradually destroys some areas of the brain responsible for storing and processing memories, leading to the loss of memories and their subsequent progressive deterioration.
Progressive amnesia is a type of amnesia, depending on the circumstances, the fact that one has already had the idea and the past evidence, or is often forgotten. This condition is called retrograde amnesia; As we know, there is a memory for those that have not yet arisen, or only may come - we will come, mute to the outer world - amnesia will be carried out.