Regarding my mother's health issues. Is.

I am writing this because of my mothers recent medical condition. She has been admitted in hospital for serious depression and She has been having tablets for a while now. Now her issues are relating to memory, like she forgets where she kept something instantly. Her pulse rate is also high and she has body movements which cannot be controlled by her. Her eyes have swollen too. She has been loosing her weight too. Her skin is now light pale and she feels dizziness always. She needs to be accompanied by someone all the time. Recently she fell and injured her head. It was due to unconciousness. Please give me a valuable suggestion on which doctor to choose. Also help me choose a good doctor who can figure out what her problem actually is.