I completely understand your fear. I also have MS. The symptoms can be very scary. When I experienced tingling it was so bad that my legs would freeze up. My doctor prescribed me nuerontin also known as gabapentin and that did help me. But ultimately I changed my eating habits to a natural and healthy eating habits and that worked best. Not only did it eliminate tingling feelings but also improved my walking,, numbness, dizziness, endurance, pain, breathing, bladder, bowels, and vision. All of the above had been compromised by MS. There was a time when I was deeply depressed and had suicidal ideations.
The change in my eating habits/diet have also improved that and I didn't have to use medications for my depression. Although, I did consider medications for my depression and immediately changed my mind when the doctor told me that the depression medication can cause weight gain. I asked was there any depression medication that doesn't cause weight gain? No, was her answer to me. Not only did the diet change heal my depression but it improved all of my emotions and made me happier than I have ever been.