My mother was on the same drugs along with another beva. She has lost most of her memoery and also most of the use of her legs. It seemed to hit over night and and is now in a rehap center. No one knows what it is and they ran every test in the hospital for 2 weeks,came up with nothing and sent her to rehap. It has been a moth. For 3 weeks some of her memory came back and she could walk with help and with a walker. No as of this week we are back to where we started,she knows nothing stares and can't walk without help. We can't get any answers. What has happened to your mom and have you found out what causes it and how to treat it?