Initial Reactions To Older People With Radical Changes.

What initial steps would you think about taking if an older person close to you radically changed his/her behavior over a short period of time ? 

Minimum 300 words 

Textbook

 Innes, A. (2009). Dementia Studies: A Social Science Perspective. Thousand Oaks, CA: Sage. (paperback version)

ISBN 978-1-4129-2164-0