1. An extremely rare condition characterized by the ability to recall an unusually large number of personal experiences and events in vivid detail, often with precise dates.
Usage: medical/psychological term; also called hyperthymestic syndrome or highly superior autobiographical memory (HSAM); extremely rare in the general population

Examples

• The documentary featured a woman with hyperthymesia who could recall every meal she had eaten for the past twenty years.
• Researchers studying hyperthymesia have found that people with this condition often have exceptional memory for personal events but not necessarily for other types of information.
• Her hyperthymesia allowed her to remember the exact date and details of conversations from her childhood.
• Scientists are investigating whether hyperthymesia involves different brain structures than those in people with typical memory abilities.
• The condition hyperthymesia is so rare that only a few dozen confirmed cases have been documented worldwide.