Friday Evening My Mom Was Attempting Set In A Chair

Friday evening my mom was attempting set in a chair and kept fumbling until I caught her. She hit her head on the wall and moved the dining table until I caught her. My sister and got her up under the table and in the chair and then she started perspiring then her arms were ice cold while sweating. She started moving around and saying strange things and flopping arms all about. My sister and decided to take her to couch because would not eat and hadn't eaten all day. We both had to guide her she was in emoble state. She kept trying to bend her knees. I ordered dinner and came back and she was just fine and not sure if she knew anything had happened. The past three weeks she has wrecked her car,fell and we took her to hospital and they said she was fine, now this? Could she have dementia? Sleeps gets up for about anhour then goes back to sleep for two more hours or more.