Your loved one may be hostile or belligerent because they lost the ability to understand or remember. It’s important for families to understand the disease is the culprit. Let’s face it: dementia changes everything, including the person with the disease. Your loved one may be pleasantly confused or become agitated and challenging. Their opposition or resistance and negative attitude all are expressions of their confusion. Understanding the person’s life story can help you manage through these actions.
Source: Confidence to Care