My father has dementia and living in a memory care facility for almost 4 years. His health is good and no other diseases other than the memory loss. Up until about 6 weeks ago he's been easy going. But the last 6 weeks have been awful. He is very aggressive, pulls the caregivers's hair, he is refusing care, throwing all his pictures and nick nacks off the wall and breaking them. This weekend he was found breaking all his cd's. He cut himself pretty bad with a broken cd. His provider has put him on Risperidone and Seroquel for this aggression..Is this just a phase or another phase of his dementia?