Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with your doctor.
Without the ability to examine you and obtain a history, I can not tell you what the exact cause of your symptoms is. However I will try to provide you with some useful information.
Multiple sclerosis is a disease that primarily affects the central nervous system (brain, spinal cord, nerves from the eye, the optic nerves). Symptoms may be mild to severe, ranging from tingling and numbness to paralysis. There is not one test alone or one symptom that can diagnose MS, but there are well-established criteria that help neurologists make the diagnosis. These include taking a thorough history, doing a thorough physical exam, conducting an MRI of the brain with gadolinium (contrast, similar to dye) and sometimes MRI of the spine, and sometimes ancillary testing such as lumbar puncture and evoked potentials.
Findings of demyelinating lesions in the infra and supratentorial lesion, oligoclonal bands in the CSF, and abnormal VEP are all findings that can occur in MS, and are part of the diagnostic criteria (the criteria physicians use to make a diagnosis) but in order to make this diagnosis, a detailed history and neurologic examination is required. Uncommonly, other disorders can mimic MS, and these are usually excluded based on the history, examination, and appearance on the MRI, as well as other testing when indicated.
Continued followup with your neurologist is recommended; evaluation by a neurologist specialized in neuroimmunology (an MS specialist) may be of particular benefit.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.