question: Hi, I have a 75 year old father-n-law who is experiencing seeing people in his house that is not there.  This morning he said that my mother-n-laws Indian statue collection was looking at him and laughing at him and he saw a rabbit or squirrel under a shirt on a foot stool.  His only medication he takes is aricept and has been on this for year or so.  Is this part of dementia?