Topic: Alzheimer's Disease
Subject: Medicine
A 62 year old woman has demonstrated increasing loss of recent memory over a 5 year period, now associated with reduced affect and nominal dysphasia. She dresses neatly and social amenities are preserved. There are no localizing motor or sensory findings.
Which one of the following is the most likely diagnosis?

A. Cerebral vascular disease

B. Hydrocephalus

C. Huntington's disease

D. Alzheimer's disease

Please do not use chat terms. Example: avoid using "grt" instead of "great".