ערב evening -- Dementia brings people to the evening of their life, and brings darkness to their families.

ערב community -- The Jewish value that all Jews are community
כל ישראל ערבים זה בזה

The Erev Program guides the Jewish community in relating to its members/families who are in the darkness of dementia.
ויהי ערב ויהי בוקר יום אחד 
And there were the stricken and there were the well, all as one.

See details of The Erev Program