My sister has schizophrenic and since 4 days she is in hospital for the treatment. Some day she behaves well and talks to us very friendly as if she is all normal. But some days she either refuses to talk to us or talks very negative. Is this common during the treatment? I thought once she is on medication her condition will improve day by day but she was well first two days and then on third day she was very negative refusing to talk to us.