Your symptoms are mostly neurological. If all the tests are normal, one does think of Conversion disorder. Have you been diagnosed with conversion disorder ?
While we are trying to consider conversion disorder, I am thinking about the Bell's Palsy part of your symptoms. This is an unusual symptom. It is difficult to have unilateral paralysis of the face in conversion disorder.
Sure sounds like conversion disorder to me. but I am not a physician. However, I was diagnosed with severe conversion disorder in 2003. In fact, on my medical report from the Doctor, it said that I tested 99.6%, which was greater than thing ever studied in clinics. Possibly indicating that I have the most severely documented case in the country. I can tell you things about this disorder that Doctors cannot tell you. I is capable of manifesting itself in very unusual ways. It is a viable medical problem. However, because stressors or trauma causes it, it was kicked into the Pychiatric department. Once you have weeded out organic abnormalities, and can still find no cause for the symptoms, it is wise to consider Conversion Disorder. It took me two years to get 8 months to get diagnosed. Hang in there. any questions just ask.
Dr. John Speed is a Conversion Disorder Specialist who did ground breaking work in this area. He is in the University of Utah, USA. (Physical Medicine Department). IF he cannot fix it, no one can in my opinion.
Correction: It took me 8 months to get diagnosed, not two years and 10 months to finally get help.
Can you tell me if conversion disorder is all over in the brain given that it is a motor sensory or central nervous sytem. Does it all extend back to one specific location in the brain like the brain stem?
Conversion disorder is not considered a neurological disorder. Even though the symptoms are all neurological, it has it's origin in the psychology.
The trigger for a conversion episode is usually a period of stress and anxiety. The symptoms are very much true for the patient and he/she does not remember anything if the conversion involved unconsciousness.
Hence, there is no particular area of the brain that can be ascribed to conversion. There is research going on in this area. Some studies have come up with temporal lobe hypo perfusion theory. You might read this article.