Retrograde amnesia

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Classification according to ICD-10
R41.2	Retrograde amnesia
ICD-10 online (WHO version 2019)

A retrograde amnesia ( Latin retro 'backwards' ; English retrograde amnesia ) is a special form of amnesia in which people are no longer able to remember what happened before a certain, mostly traumatic , event.

The memory loss relates to a (mostly short) period of time prior to the specific event; for example, a patient can no longer remember what happened in the accident. When these gaps in memory are severe, the resulting uncertainty can be distressing for those affected.

A retrograde amnesia can also occur in connection with a predominant anterograde amnesia in a Korsakoff syndrome .

A particularly severe known case of retrograde amnesia is the case of Benjaman Kyle, who was found beaten up near a fast-food outlet in 2004 and tried to regain his memory with the help of the media. Because there was no person who knew him or could help him remember. In chunks, memories of his past come back when he feels reminded of past experiences by objects and places. It was not until 11 years later that his identity could be determined through DNA tests.

Individual evidence

1. ↑ Walter Siegenthaler, Hubert E. Blum (Ed.): Clinical Pathophysiology . 9th edition. Thieme, Stuttgart / New York 2006, ISBN 3-13-449609-7 .
2. ↑ Hannes Stein: Benjaman Kyle - The man without memory. In: welt.de. December 13, 2012, accessed May 19, 2015 . 
3. ↑ Ken Justice, Jodi Mahrmann: Benjamin Kyle writes 'Thank You' post . In: News 4 Jax . September 16, 2015. Retrieved September 15, 2017.
4. ↑ Matt Wolfe: The Last Unknown Man . In: newrepublic.com . November 16, 2016. Retrieved September 15, 2017.

This article is about a health issue. It is not used for self-diagnosis and does not replace a diagnosis by a doctor. Please note the information on health issues !