I. Introduction
Dementia is one of the devastating diseases that requires extensive care from family members and caregivers. Since symptoms of dementia could be extremely complex and may fluctuate episodically, family and caregiver suffer from depression and high psychological stress from patient care [1] . Causes of such variable behavioral and psychological symptoms of dementia are thought to be highly compound that not a single intervention strategy can be a solution to alleviate the symptoms. It has been suggested that to lessen the caring burdens of family members and caregivers, new approaches that are tailored to the patients, contexts where the symptoms occur and caregivers are required [1] , [2] .