Complex sentence: Patients with psychotic depression, psychotic bipolar disorder, schizoaffective disorder, and schizophrenia with mood disorder symptoms, share symptoms that wax and wane and evolve over time, crossing the categorical diagnostic boundaries of schizophrenia and mood disorders.
Split into simpler sentences: Patients with psychotic depression, psychotic bipolar disorder, schizophrenia with mood disorder symptoms also share symptoms with schizoaffective disorder patients. Symptoms in patients with these four disorders wax and wane and evolve over time, crossing the categorical diagnostic boundaries of schizophrenia and mood disorders.