louiec,
I am sorry to hear about your neurological symptoms. The fact that your MRI was clear is a good indicator away from more serious conditions. Do you know if T1/2 Weighted/FLAIR/Saggital Stir sequences were obtained in Maximum AP demension? You may, for your own well being, want to read your own report or have your family physician double check. If these are clear, this leaves little room for concern regarding serious neurological conditions.
I would suggest an MRI of the C/T spine to look for a syrnx and as well for plaques.
To answer your question regarding a developing syndrome, say over a year; your symptoms do not indicate this or at least the symptoms and sequences that you are displaying which are variable and non-specific. Common neurological syndromes that could occur would be Acute Transverse Myelitis, Optic Neuritis, and ADE, to name a few. You are not indicating symptoms of any such condition. Please keep in mind that these symptoms are variable and can be benign, such as a stress disorder.
If you need to have the aforementioned sequences obtained do find lesions it is important not to jump to conclusions, such as MS. Your symptoms, which can often be present in MS, can be accounted for by other etiologies such as Lyme disease, CNS Vasculitis, AED. Demyelinated neocortical lesions in marmoset autoimmune encephalomyelitis mimic those in multiple sclerosis as do those in Lyme disease. Due to your locale I would suggest a workup on LD and that your testing be obtained thru IGENEX LABS in California for the surest results. LD is rare, however, it can produce the neurological symptoms without clinical findings.
Good Luck!
First of all, keep in mind that I am unable to diagnose you because I am unable to examine you, this forum is for educational purposes.
The symptoms that you describe are not classic for any single disorder. A feeling of facial tightness is seen on some people that suffer from chronic headaches (a varient of the "tension related" band around the head pattern). While it is possilbe for certain disease processes like strokes, aggresive tumors, etc, to show up after a clean MRI a year ago, I agree that it is unlikely given the symptoms you describe. I would recommend that you consider a headache preventative medication (headache related symptoms can occur with out the head pain portion of the headache) such as Elavil, topamax or nadolol. You may also consider a bite guard to helo with your TMJ, which can also contribute to headaches.
I hope this has been helpful.