What Is The Cause And Treatment For Vertigo?

My grandma has a swollen hand, and swollen feet,vertigo, looses her place (thinks she's in the living room but she's in the kitchen), insensibility , lost of strenght and appetite. We've been to diferent doctors and she was released from the hospital yesterday after being there receiving nutrients through an IV. Now after only a few hours , she's worse again. we don't know what to do. Please help.