Multiple sclerosis (MS) is a disease of the central nervous system (CNS), which includes the brain, spinal cord and optic nerves. The underlying biology is similar for everyone, but its course and symptoms vary from person to person. The majority of people with MS initially have a relapsing-remitting or primary progressive form of MS identified at diagnosis. Explore the similarities and differences between these two forms of MS.
In every form of MS, the immune system attacks nerve cells in the CNS, which can cause symptoms and disability.
Both RRMS and PPMS are marked by worsening signs or symptoms at some point during the course of the disease.
Symptoms are similar across all forms of MS, but differ for each person, no matter which form.
Most people with RRMS and PPMS experience an increase in physical disability at some point in time.
Both man and woman can be diagnosed with RRMS and PPMS.
Disease activity may be outwardly apparent with new or worsening signs or symptoms, or underlying, such as lesions (inflamed or damaged areas of the central nervous system) that are detected with special equipment like magnetic resonance imaging (MRI).10
An important goal of treating RRMS and PPMS is to slow the progression of disability as early as possible.
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