"They are proposing the creation of a new diagnosis: mild behavioral impairment. The idea is to recognize and measure something that some experts say is often overlooked: Sharp changes in mood and behavior may precede the memory and thinking problems of dementia.

The group made the proposal on Sunday at the Alzheimer’s Association International Conference in Toronto, and presented a 38-question checklist that may one day be used to identify people at greater risk for Alzheimer’s."

A brain scan shows amyloid plaques in the tissue of a patient who died of Alzheimer’s disease. Credit Yankner Laboratory, Havard University

http://www.nytimes.com/2016/07/26/health/alzheimers-checklist-mild-behavioral-impairment.html