Hyperthymesia

Lexicon Entry
Bookworm Detective's superhuman power of recollection. Also called "super-memory" or "total recall," this ability allows her to record all visual information as images. There are fewer than 100 people in the entire world with this condition. Such individuals have developed a region in their brains for recalling autobiographical memories, though the principles at work here are yet unclear.

However, as Bookworm Detective can attest, negative past experiences are easily recalled as well, strengthening the memory each time. This results in a very high percentage of people with this ability feeling mentally overwhelmed.

One might say that the inability to forget is quite the splendid affliction.