Therapies are currently available for relapsing-remitting MS, secondary progressive MS and progressive relapsing MS.

目前有针对复发-缓解型，继发-进展型，与进展-复发型多发硬化症的治疗方案。

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The most common type is relapsing-remitting MS, in which patients experience attacks of symptoms such as muscle weakness and spasms followed by periods of symptom-free remission.

最常见的类型是“复发-缓解型多发性硬化”，即病人在症状发作后，如肌无力和肌痉挛，有一段症状完全缓解的期间。

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They can reduce the incidence of relapse or extend time between relapses in the relapsing-remitting form of MS but symptoms are not changed by the drugs.

它们能够降低医学倒退的发生率或者延缓倒退-抵消相转换的医学形式，但是，药物并不能够改变这些症候。

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The United States Food and Drug Administration has approved 3 forms of beta interferon for treatment of Relapsing-Remitting MS.

VOA: special.2009.01.06

It begins to affect them several years after they have had Relapse-Remitting MS.

VOA: special.2009.01.06

This form of the disease affects about 50% of those with the Relapse-Remitting form of MS.

VOA: special.2009.01.06

Eventually relapsing-remitting MS can become progressive MS as the good spells become shorter and less frequent.

BBC: Multiple sclerosis: New drug 'most effective'

When the condition is diagnosed most will have a form of the disease know as relapsing-remitting MS, in which the symptoms can almost disappear for a time, before suddenly returning.

BBC: Multiple sclerosis: New drug 'most effective'

Twenty had relapsing remitting MS, 15 had secondary progressive MS, and five had primary progressive MS. Researchers also recruited 15 healthy control patients free from ophthalmological or neurological disease as a comparison group.

CNN: Can an eye exam detect multiple sclerosis?