Hyperthymesia, also known as hyperthymestic syndrome or highly superior autobiographical memory (HSAM), is a condition that leads people to be able to remember an abnormally large number of their life experiences in vivid detail. It is extraordinarily rare, with fewer than 100 people in the world having been diagnosed with the condition as of 2021. A person who has hyperthymesia is called a hyperthymesiac. American neurobiologists Elizabeth Parker, Larry Cahill and James McGaugh (2006) identified two defining characteristics of hyperthymesia: spending an excessive amount of time thinking about...

Jill Price (née Rosenberg, born December 30, 1965) is an American author from Southern California, who has been diagnosed with hyperthymesia. She was the first person to receive such a diagnosis, and it was her case that inspired research into hyperthymesia. She has co-authored a book on the subject. == Abilities == Price is able to recite details of every day of her life from the time when she was fourteen years old. She can recall various obscure moments of her life in great detail. Her condition, termed hyperthymesia, or "hyperthymestic syndrome", is characterized by a highly superior ...