Symptoms Pointing to MS

My friend, since January of 2008, has been having symptoms that the doctors say point toward MS. He has problems with balance, shaking in his right arm, spasms, occasional experience with a tingling/shocking sensation resulting in numbness of the face, and more recently speech problems that make him stutter, or unable to speak certain words or letters. They have him in the hospital, for the second time since he went in to the emergency room in January, taking 5-day treatments of steroid therapy. After doing a spinal tap they said simply that he had 'some abnormalities', and his MRI came back with 2 apparent lesions. His family doctor has tried to convince him and his parents that his mind is playing tricks on him due to anxiety, and even prescribed an anti-anxiety medication and Zoloft. How is an anti-depressant going to help someone with this happening to them? What we are trying to find out is what he can do to treat the entire problem, instead of relying on doctors to treat one by one with remedies that seem to do more harm than good. He is currently unable to attend any sort of consultation with a homeopathic doctor, and is not sure if his insurance covers such things.