Making sense of multiple sclerosis

Although a once-promising MS drug has been pulled off the market, other therapies are under investigation.

Every week, about 200 Americans, most of them women, discover that they have multiple sclerosis (MS), a chronic, incurable neurological disease. For many, the bad news begins with a bout of subtle but scary symptoms, which can include tingling sensations, muscle weakness, and blurred or double vision. These symptoms usually wax and wane, reappearing unpredictably after months or even years. Some MS patients are only mildly affected; others eventually need a cane, wheelchair, or human assistance to get around. Aside from the physical challenges of the disease, uncertainty about its course often fosters depression and stress.

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