A 70 yrs. old man presents with h/o prosopagnosia, loss of memory, 3rd person hallucination since 1 month On examination deep tendon reflexes are increased. Mini-mental examination score is 20/30. What is most likely diagnosis:
Answer is. (D). Cortical dementia Loss of memory is found in dementia in old age.Though there is 3rd person hallucination which can also be present in dementia depression mania but the history of the increase in deep tendon reflexes and MMSE score 20 or less, points towards dementia.
Dissociated dementia
Schizophrenia
Depression
Cortical dementia