bipolar with schizoaffective disorder

difference between "schizoaffective disorder" and "bipolar with psychotic features?
What is the difference between the previous two, or are the same thing?
They are different. Psychiatric diagnoses are made based upon criteria found in a handbook called DSM (currently the DSM IV). This is a list of diagnostic criteria. The two disorders may be difficult to differentiate between unless you are familiar with both. It may occur in similar ways. Schizoaffective disorder: bipolar with psychotic http://www.fortunecity.com/campus/psychology/781/sd-dsm.htm: http://www.fortunecity.com/campus/psychology/781/dsm.htm
What is schizoaffective disorder???