MS is a chronic condition affecting 2.8 million people worldwide. While treatment options are currently limited, trials of several new approaches are underway.
Researchers believeTrusted Source that MS is an autoimmune disorder. This type of illness involves the immune system attacking healthy cells, much as it would attack viruses or bacteria.
In the case of MS, the immune system attacks the myelin sheath that surrounds nerve cells. The attack causes lesions to form, and over time, these cause scarring, which leads to nerve damage and reduced function.
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