Mirror sign

It is difficult to check the apraxia and frustration of patients with senile dementia, and it is difficult to distinguish it from incompetence due to aphasia, visual spatial skills and forgetting. About one-third of patients have vision failure. Those who cannot recognize face, do not know the face of relatives and familiar friends. Impaired self-recognition can produce mirror signs. Patients sit in front of the mirror and talk to their own images in the mirror, and even ask themselves "who are you".