Sounds like your PTSD is triggering your schizophrenia hallucinations. With PTSD you may not always remember what was said or exactly what happened - until your mind finally let's you see or hear it in the form of a hallucination triggered by a memory usually caused by some action, sound, or smell going on around you. The problem is, those memories and hallucinations can in turn trigger any other psychological problems you may deal with.

For instance, I have been diagnosed with depression, anxiety, PTSD, and borderline personality. I was raped 3 different times in my life and there was a "close fourth" that traumatized me just as much if not more as the actual rapes. That "close fourth" occurred while I was outside in a major thunderstorm. For many years after, any time I heard even the faintest rumble of thunder, I would turn white as a sheet, turn cold, and freeze in my tracks. My mind would go back to that day. I would see myself struggling to get away. Hear him laughing. Hear the thunder. See the lightning. Feel the rain hitting me as I ran ... and finally, feel all the cold fear. Then, I would get really anxious, sure he was there or someone else would come after me. Those things would trigger the psychosis I also have with my depression at times, and I would start hearing voices, laughing or telling me how awful I was. This in turn would cause me to sink into a depressive state.

So, in effect, my PTSD was triggering both my anxiety and depression, but I also needed to allow it to happen in order to find a way to heal. Through those hallucitory memories, I was able to peice things together to allow it to make enough sense to figure out how to cope with it.

The object is differentiating between the schizophrenic hallucinations and the hallucitory memories. Think of the hallucitory memories as your brain giving you snippets of your past. Like watching a movie in little bits and then walking away and coming back later. Try to put those snippets together without putting too much emphasis on the schizophrenic hallucinations. It may help you find a resolution so you won't keep having mixed hallucinations. That's what I did anyway. I hope it can help.