Schizoaffective can include psychosis in the absence of a bipolar mood episode.

There are also other things that can activate mild psychosis, even just a severe anxiety attack with sleep deprivation, or something along those lines.

I definitely get the symptom of perceiving that faces in pictures, magazines, etc are looking at me during a paranoia episode, and I do get paranoid psychosis bouts.

Usually all I can do is pace and talk, to try to wind it down. Keep moving, keep talking to myself, keep explaining things to myself. Basically try to 'take charge' for the frightened parts of my mind and try to be a like a parent or a leader, be brave and try to stay focused and logical.

Don't be embarrassed or feel too silly to confront things. Reality testing might possibly be very helpful. Search the apartment, look in the closets, check everything, confirm for yourself that there is no one there, trust your instincts, trust yourself when you determine that it is just sounds that are not real, and so on.

Don't be afraid to call someone if it gets really bad. Talking can help.

Sorry you're experiencing this, I know those episodes suck something serious.