What does 'retrograde amnesia' refer to?

Retrograde amnesia specifically refers to the inability to recall events or information that occurred prior to a traumatic event, such as a head injury. This type of amnesia can occur after a significant trauma or psychological stress and can affect memories formed immediately before the injury and sometimes even further back in the past. It is distinct from anterograde amnesia, which involves difficulties in forming new memories after the event has occurred. This understanding is crucial in assessing cognitive impact and recovery following a head injury, as professionals must differentiate between types of memory loss to provide appropriate care and rehabilitation strategies.