Hallucinations are associated with psychotic disorders, drug use and some organic brain syndromes. There are multiple theories that attempt to explain why they occur. The nature of hallucinations is complex and their cause is unknown.
One intriguing theory about auditory hallucinations involves an inability for some people to recognize their own voice. We all hear an inner dialogue. This voice we typically recognize as our own. Several studies have indicated that some people with schizophrenia have difficulty recognizing their own voice. Some scientists theorize that it could be due to faulty neurological functioning. If you hear a voice that you don’t recognize as your own, your brain might naturally conclude that it was someone else’s voice.
Maybe something similar happens with your thoughts. These thoughts are generated by you, but you’re not recognizing them as your own. You also might be describing thought insertion, which is a belief that an outside influence is inserting thoughts into your mind. It is a symptom of psychosis and commonly linked to schizophrenia.
There may be other possibilities as well. I would recommend discussing your concerns with your psychiatrist. He or she might have more insight into why you are having these experiences and more importantly, how to reduce or prevent them from happening. A medication adjustment might be necessary.
You might also try reading about the nature of auditory hallucinations. You can learn more about the aforementioned brain theory in the book Neurologic: The Brain’s Hidden Rationale Behind Our Irrational Behavior. Another good choice is Hallucinations by Dr. Oliver Sacks. It is a very informative and well written book. Please take care.
Dr. Kristina Randle