I'm reminded of that man, I believe an English guy, who basically had the "Memento" issue. He could remember certain concrete facts about his past, but after a certain point there was nothing, and in his day to day life he could only keep any information in his head for about a minute or less. In fact he described it as like being dead, or continually awakening from some dream only to awaken again, as he was very aware of his condition but unable to do anything about it (it was caused by brain damage due to an extremely rare HPV(?) issue). Every time he saw his wife, he acted like it was the first time he'd seen her in years and gives her a huge hug. Has no idea how old his kids are or what any of them are doing with their lives, although he is repeatedly told so.

This was a viral video or something some time ago, wish I could remember his name. Interestingly enough, his procedural memory was still okay and he could play the piano (he was in some way deeply involved in music, might have taught it, I can't remember). Apparently though, the emotional impulses he would experience from playing the piano would at times cause neuronal firing in damaged brain areas, causing him to have seizures. Anybody remember this guy?