AMNESIA

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What is it?

Amnesia desribes long term memory loss; an inability to remember recall past events which were once readily remembered.

Subtypes

Anterograde amnesia - Inability to remember ongoing events after the incidence of trauma or the onset of the disease that caused the amnesia
Emotional/hysterical amnesia - Memory loss caused by psychological trauma; usually a temporary condition
Lacunar amnesia - Inability to remember a specific event
Korsakoff syndrome - Memory loss caused by chronic alcoholism
Posthypnotic amnesia - Memory loss sustained from a hypnotic state; can include inability to recall events that occurred during hypnosis or information stored in long-term memory
Retrograde amnesia - Inability to remember events that occurred before the incidence of trauma or the onset of the disease that caused the amnesia
Transient global amnesia - Spontaneous memory loss that can last from minutes to several hours; usually seen in middle-aged to elderly people