It is normal to have some level of memory<unk> , or the lack of trusting in one's own memory. This may occur when speaking with your parents about your childhood, for example. However it seems that everyone has their own level of memory<unk> , and<unk>  seems to be a severe case. The direct cause is unknown; however, it is possibly a defense or coping mechanism to a preexisting condition that would alter one's memory. This could involve frontal lobe lesions, Alzheimer's disease, amnesia, dementia, or other conditions. Any condition that would alter either existing memories or the formation of new memories could cause a coping scheme such as<unk> . Alternatively, an individual may have learned over time to not trust their own memory from conditioning, and as such the individual would develop a defense mechanism to remove themselves from potential embarrassment.
Memory distrust syndrome
False memory syndrome
Excited delirium
Drug-induced amnesia
Post-traumatic amnesia
Psychogenic amnesia
Childhood amnesia
Stroke recovery