How Can Alzheimer's Disease Be Treated?

I am trying to care for my Mom ( age 81) w/ Alzheimers . My brother and I have alternated caring for her at home for the last 5 yrs. It is becoming so increasingly hard to do this. She is becoming so paranoid, emotional, and combative. She is on serquel 50 mg x daily and now that seems to be not effective. She is afraid to be alone in a room even for a min. She barcades all the doors in the house with furniture because she is afraid. She is very combative about doing any thing to care for her such as bathing changing clothes, taking meds, brushing teeth. I am so overwhelmed and I can't get a Dr. to help find a placment for her becausee she is too mobile and she is combative. Any suggestions.