A lack of awareness of impairment, not knowing that a deficit or illness exists, in memory or other function is called anosognosia. The term anosognosia refers to brain cell changes that lead to a lack of self-awareness. Many Alzheimer's patients appear to be in denial ... actually, they have anosognosia, and do not realize that they have problems.
Anosognosia (Unawareness of Decline or Difficulties) The purpose of this educational session is to provide some information on a condition in which changes in brain cells lead to some or complete unawareness of decline in ability, such as decline in sho
http://alzonline.phhp.ufl.edu/en/reading/Anosognos...