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D. Why Pediatric Cases of Multiple Sclerosis May Be Missed

Narrator: This is Science Today. Multiple sclerosis, or MS, is an inflammatory disease that affects the brain and spinal cord. Typically, it affects patients between ages 20 and 40 at the onset, but it can also affect children. Researcher Emmanuelle Waubant, of the University of California , San Francisco says of the 400,000 cases of MS diagnosed in this country every year, 10,000 are pediatric cases. But neurologists think that figure may be higher because cases are being missed.

Waubant: It's not so commonly diagnosed first because sometimes some symptoms are mild, so it requires a very good awareness of your body. Tingling in one leg or slight decrease in vision in one eye may not be perceived as being abnormal by a child, especially very young. If all this is mild, it may not be MS. It may be something else or nothing. So, if parents are worried, they should see their pediatrician.

Narrator: For Science Today, I'm Larissa Branin.