PCOS possible connection with mental health problems

I work as a mental health support worker in Leeds W. Yorks in England. One of my clients has been diagnosed with PCOS but she also suffers from what her psychiatrist says is schizophrenia. We think that there may be some correlation between the symptons of PCOS and schizophrenia and that her mental health problems could have been misdiagnosed. Has anyone else got any experience of this. Has anyone else been diagnosed with mental health problems which could actually be symptoms of PCOS. Does anyone possess any medical evidence of this correlation. Her psychiatrist is refusing to erase the label of schizophrenia from her medical records due to lack of medical evidence