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- Relapsing-remitting MS: People with this type have attacks when their symptoms get worse, called relapses, followed by full, partial, or no recovery. These flares seem to change over several days to weeks. Recovery from an attack takes weeks, sometimes months, but symptoms don’t get worse during this time. Most people have this type when they’re first diagnosed with MS.
- Primary-progressive MS: In this type, symptoms gradually get worse without any obvious relapses or remissions. About 15% of all people with MS have this form, but it’s most common type for people diagnosed after age 40.
- Secondary-progressive MS: People who get this type usually start with relapsing-remitting MS. Over time, symptoms stop coming and going and begin getting steadily worse. The change may happen shortly after MS symptoms appear, or it may take years or decades.
- Progressive-relapsing MS: This is the least common form of the disease. Symptoms steadily get worse, but people also have flares that may or may not be followed by some recovery. At first, people with this type may seem to have primary-progressive MS.
What Is a True Relapse of Multiple Sclerosis?
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