The typical case is characterized by a sudden, complete inability to retain new information, lasting for several hours, in a middle-age or older person, with preservation of alertness and all other ...

Dissociative amnesia causes memory loss, often due to severe stress or trauma. People may not remember important information about themselves or things that have happened to them. For example, the ...

Amnesia is the loss of memories. These may be memories of events and experiences that happened in the past few seconds, in the past few days, or in the distant past. You may also be unable to recall ...

Long dramatized in movies and novels, amnesia refers to a profound loss of memory that’s temporary, permanent, or progressive (gets worse over time). Depending on the type and cause of amnesia, the ...