You can certainly get a second opinion. Schizoaffective is a variant of schizophrenia where the thought disorder schizophrenia exists at the same time / co-occurs with a mood disorder like depression.
Depression with psychotic features is also a diagosis.
Like Donna said, depression can also occur with schizophrenia to a greater degree.
You've written about your son several times since 2008. And it's been over a year since you wrote last. How is he doing?
Schizophrenia and depression are often experienced together. Although someone with schizophrenia can have just sz symptoms or just depression symptoms. Although I have schizophrenia (diagnosed 1995) depression has always been my worst problem and appeared at a much earlier age. Depression has been more constant and more resistant to treatment.
If your son's psychiatrist says he has schizophrenia, then I would trust the doctor, who has been observing your son for a long time. But misdiagnoses are possible. For instance, I was first diagnosed with bipolar disorder before the doctor settled for schizophrenia w/major depression.
You can see why someone with sz might tend to be depressed. It can be a depressing illness at times, for many diverse reasons. Will your son see a therapist? Maybe he needs help with structuring his time or developing new interests.
But you can tell him there is hope. After experiencing depression and sz for a long time, I have finally substantially recovered. I do have a problem now and then, especially if I skip meds, but ordinarily I live a quite ordinary life.
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