Literature
Amnesia
Dissociative amnesia: Dissociative amnesia occurs when a person blocks out certain information, usually associated with a stressful or traumatic event, leaving him or her unable to remember important personal information. With this disorder, the degree of memory loss goes beyond normal forgetfulness and includes gaps in memory for long periods of time or of memories involving the traumatic event.
Though I've never been diagnosed for it, I'm almost positive I have dissociative amnesia. I have only one distinct memory of anything before age 9, my first day of kindergarten. Any other memory I've ever been able to retrieve has clearly been so