It may help you to consult a psychyatrist doctor.it seems that a chemical substance topamine is created in your brain.Suitable mediction will solve your problem.

Hi.  I heard voices once when I was 17 years old.  My mother had just passed and I couldn't sleep so I woke up and went to the living room.  I didn't want to wake anyone up so early around 4-5 a.m., so I just sat and thought about my sadness.  Slowly, I drifted off and lied down to sleep on the sofa.  I heard several voices talking and I couldn't discipher what they were saying.  I got scared and bolted up right and ran to my room.  I think I told my father and sisters of what happened.  

I don't know what it was all about, but I believe their are spirits all around when our state of mind is not stable, such as going through grief or sadness.

*smile* they are around more often than that, but we tend to notice them more when we are in an altered mind state, like grief or lack of sleep.... I'm happy you shared your story though....

I have insomnia, and when I am laying in bed at night and so tired that I am miserable with not being able to sleep I see them, and sometimes have a conversation... it just depends on the mood I guess....