multiple sclerosis
US /ˌmʌltɪpl skləˈroʊsɪs/
UK /ˌmʌltɪpl skləˈroʊsɪs/

1.
a chronic, typically progressive disease involving damage to the sheaths of nerve cells in the brain and spinal cord, whose symptoms may include numbness, impairment of speech and of muscular coordination, blurred vision, and severe fatigue.
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She was diagnosed with multiple sclerosis at a young age.
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Research continues to find a cure for multiple sclerosis.
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