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Multiple sclerosis: A disease that is characterized by loss of myelin (demyelinization). Abbreviated MS. Myelin, the coating of nerve fibers, is composed of lipids (fats) and protein. It serves as insulation and permits efficient nerve fiber conduction. In MS, demyelinization usually affects white matter in the brain, but sometimes it extends into the gray matter. When myelin is damaged, nerve fiber conduction is faulty or absent, and nerve cell death may occur. Impaired bodily functions or altered sensations associated with those demyelinated nerve fibers give rise to the symptoms of MS, which range from numbness to paralysis and blindness . People with MS experience attacks of symptoms that may last days, months, or longer. For many patients, the disease is progressive and leads to disablement, although some cases enter long, perhaps even permanent, remission. The cause of MS is unknown, although viral activity is suspected. Most patients are diagnosed between the ages of 20 and 40. Until recently, treatment had focused on preventing attacks. Steroids, interferon , and medications to treat specific symptoms (such as fatigue , depression , and vertigo ) are standard, along with lifestyle changes to avoid stress and other triggers. New treatment options involve immune system modulation or support.

Note that you can also use your CPT manual to study human anatomy vocabulary. Current CPT manuals come with instructive illustrations, diagrams, and charts all throughout the book, including a medical terminology abbreviations list. In the front of the CPT manual, you should be able to find a list of anatomical illustrations. Bookmark this page and refer to it in case you’re looking for an illustration of the eye or inner ear, or need to remember which artery goes where. Also, be sure to download our ebook for more detailed tables on medical terminology.

The current aim in the US is to achieve universal (or come as close as possible to universal) immunization of children with the chickenpox vaccine. The rationale for childhood chickenpox vaccination is not just to protect the children but also to protect everyone with whom they come in contact, including adults (who can die from the chickenpox) and pregnant women (so that the unborn baby does not get chickenpox). Because chickenpox in children is usually not serious, some people think it is safe to let children get the disease. However, it is never possible to predict who will have a mild case of chickenpox and who will have a serious or even deadly case of disease. Now that there is a safe and effective vaccine available, it is not worth taking this risk. A person can get chickenpox more than once but it is uncommon to do so. For most people, one infection is thought to confer lifelong immunity.

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