Last year it was suggested that I have MS due to 4 lesions in my brain and a couple on my spinal cord. I have been on Betaseron for this. I have had leg numbness and tingling since last year. Evey now and then I will get other symptoms such as hand tingling, swallowing issues, pain, anxiety, etc. I am also on low dose Zoloft for the anxiety. This past week I have noticed slight trembling in my hands and some muscle twitches in my legs. Is this MS or do I have Parkinson's Disease. Does PD cause brain lesions? Can someone have both?