Amnesia is often used to describe memory loss due to injury or disease in medical shows or discussions. The patient displays symptoms of amnesia following the cerebral hemorrhage.
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Total or Partial
Amnesia can be total or partial, meaning a person may forget everything or just specific parts. She's experienced partial amnesia; she remembers her name but not her family.
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Common Misunderstanding
Unlike in movies, real amnesia rarely involves forgetting one's identity completely. He knew who he was, but his amnesia blocked memories of the past year.