Is “Schizophrenic” considered to be a derogatory or offensive term?

In US English, "Schizoid" is considered a derogatory term, while "patient/person with Schizoid Personality Disorder" is the "politically correct" term (and more accurate).

For this reason I wanted to be sure, is calling someone "Schizophrenic" (assuming the diagnosis is correct) considered offensive in any way? Is is more "correct" to use the full "patient/person with schizophrenia"?

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What I'm trying to ask is, would my use of the word in the question title of "How common are visual hallucinations in Schizophrenics?" offend anyone? Or would calling someone "a Schizophrenic" be incorrect? –  IQAndreas Jul 31 at 19:24