MULTIPLE SCLEROSIS is an autoimmune disease of the central nervous system (CNS) characterized by chronic inflammation, demyelination, gliosis, and neuronal loss. The course may be relapsing-remitting or progressive in nature. Lesions in the CNS occur at different times and in different CNS locations. Because of this, multiple sclerosis lesions are sometimes said to be "disseminated in time and space." The clinical course of the disease is quite variable ranging from stable chronic disease to a rapidly evolving and debilitating illness. The most common form of the disease is relapsing-remitting multiple sclerosis; however, several other forms exist
CAUSES
The specific cause of multiple sclerosis is unknown. The most widely accepted theory is that multiple sclerosis is an autoimmune disease that preferentially destroys the CNS while the peripheral nervous system is spared. Demyelination causes symptoms of multiple sclerosis. Damage to myelin leads to symptomatic flares in multiple sclerosis. These damaged areas often do not fully recover leading to areas of scarring, damage, and ongoing symptoms. Over time, these cumulative areas of damage can lead to disability. Of note, patients can also develop subclinical areas of damage that are detectable early in the disease course only by radiographic studies
Sign & symptoms
Affected system. Multiple Sclerosis will present with symptoms that vary depending on the location of the affected nerve. Symptoms usually appear suddenly and quickly within minutes or hours, but in rarer cases the symptoms may be dangerous and take weeks to months to develop.
1. Early symptoms