I suffered from ptsd and bipolar and I heard voices. not sure which to attribute it to. when the ptsd got better, the voices went away though. I had many voices too. they drove me mad. some were comforting though most were telling me negative things about me and how I deserved to die. it was really hard to fight them. I self harmed a lot to shut them up. it finally took getting on meds to quiet them. I haven't heard them for a very long time now.