Yes, mom had Alzheimers too (RIP). We didn't know 'til it was far advanced. She went to pick up my son from school, went in the office and said she was here to pick somebody up, but didn't remember who (only 1 grandchild at that time). She was very sad when we took away her car keys. I read a book of Alzheimers case histories. Some people become aggressive, but mom was very passive. She could still play piano after she forgot how to talk, until her music slipped away too, and she had to be fed with a spoon. The case history I remember is the old guy that was still living at home with his wife. Every time he walked by a mirror he got raving mad. He thought his image in the mirror was a strange man in the house with his wife.