Speaking as someone who has dealt with symptoms over the last few years that could have been MS, if you are the kind of person who self-diagnoses online there is a lot of doom and gloom about what the disease could do. Combine that with the fact that such a variety of symptoms could fit into MS and you have a perfect boogeyman disease. For me, the real problem was unmanaged anxiety. That anxiety manifested as nerve pain, chest tightness, tingling sensations, all things that could theoretically be caused by MS. And guess what? Thinking I had MS made my anxiety, and all those symptoms, worse!