Researchers have learned a great deal about MS and related diseases. For instance, we now know that these diseases begin when the immune system attacks the nervous system. There are several theories about why this happens, but the underlying cause is still unknown. Follow the links below to learn more about these diseases and how they are diagnosed and treated.
Multiple Sclerosis ›
MS varies from person to person. Symptoms depend on which parts of the nervous system are affected.
Clinically Isolated Syndrome (CIS) ›
People with clinically isolated syndrome are at high risk of having multiple sclerosis.
Optic Neuritis (ON) ›
ON may be the first attack of MS. The most common symptom is a loss of vision.
Transverse Myelitis (TM) ›
TM is an inflammation of the spinal cord. MS is the most common cause.
Neuromyelitis Optica (NMO) ›
Though similar to MS, NMO is different in important ways, including treatment.
Vaccination Recommendations ›
Read our recommendations about whether to continue vaccinations with MS.
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