Muscle weakness, becoming easily fatigued, impairment of sensation, tremor, visual disturbances, bowel, bladder and sexual dysfunction, as well as depression, are some of the common signs and symptoms of multiple sclerosis (MS).
MS is a chronic, often disabling, disease of the central nervous system and its symptoms may be as mild as numbness in the limbs or as severe as paralysis and loss of vision. Generally, people with MS are diagnosed between ages 20 and 40 and this disease is about twice as common in women compared to men. The exact cause of the disease is not clear since it can be triggered possibly by viruses, environmental factors, genetic and immune system factors.
MS seems to be more common among Caucasians, particularly those of Northern European ancestry. Worldwide it tends to occur with a much greater frequency in latitudes farther away from the equator (above 40 degrees latitude). However, it is almost unheard of in some populations such as Eskimos.
It is now generally accepted that MS involves an auto-immune process, which is an abnormal immune response wherein one's body develops an immune response against proteins in one's own central nervous system. This results in the destruction of myelin, the insulating sheath that surrounds nerve fibers. Just as the insulation surrounding an electrical wire may cause it to short out or impair its electrical conduction, the destruction of myelin impairs the transmission of nerve impulses sometimes causing them to be slowed or halted which in turn produces the symptoms of MS.
There is no single diagnostic laboratory test, symptoms, or physical finding which, when present or positive, cinches the diagnosis of MS. A careful and thorough history and examination as well as other tests, sometimes including a MRI scan of the brain, spinal fluid tests and electrical diagnostic tests are taken together to make the diagnosis.
It is generally quite difficult to predict the course of MS for any particular individual. MS may follow any one of four clinic courses:
1. A benign sensory form which is characterized by sensory and/or visual symptoms. These patients have no severe long-term disability.
2. Some patients experience a relapsing-remitting course characterized by partial or total recovery after attacks, relapses or flares.
3. Others may experience a relapsing-remitting course that later becomes steadily progressive.
4. A minority of MS patients have progressive disease from the onset and do not experience much in the way of remissions.
MS is a chronic disease and as anyone with a chronic disease will confirm for you, it may take its toll on one's life in a variety of ways. Attitude, self-esteem, friendships and family relationships and even sexuality may be affected. People who live well with a chronic disease have a survival attitude that is not always easy to maintain. A disease process may take away one's ability to do some things but it does not take away one's ability to think creatively or adapt to new circumstances. People experiencing health problems are challenged each day to commit brave acts that requires courage, and courage builds self-esteem. When managing MS, a survival attitude and good support can make all the difference in achieving a fulfilling and productive life.
Worldwide Web Resources
The National Multiple Sclerosis Society
The National Multiple Sclerosis Society is a wonderful source of information on multiple sclerosis. It is the oldest and largest nonprofit MS organization and provides education and support to both health care professionals and people with MS.
The International MS Support Foundation
This Web site provides information on a variety of topics related to MS, including medications, employment, equipment, research, and spouse/caregiver support.
Dr. Scott Gibbs is a neurosurgeon and editor-in-chief of Mosby's Medical Surfari. You may e-mail questions to him at drgibbs@semissourian.com or write in care of the Southeast Missourian, P.O. Box 699, Cape Girardeau, Mo., 63701.
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