hyperthymestic syndrome
n.— «Some memories are best forgotten. But there’s no such luxury for a woman known as “AJ,” who remembers the details—what she did, who she was with—for every day of the past 30 years. Neuroscientists have coined the term “hyperthymestic syndrome” to describe this first-documented case of memory dominating a person’s life.» —“Can’t Forget to Remember” by Katherine Unger ScienceNOW Mar. 14, 2006. (source: Double-Tongued Dictionary)