A cursory look at the information available under demyelination definition and demyelination of nerves clearly indicates that it’s a disease where the myelin sheath that covers the neurons is damaged. This impairs the conduction of signals from the brain to the nerves. The term demyelination of nerves indicates the effects of the disease, rather than the cause. Some demyelinating diseases are caused by genetic factors, while others are caused by infectious agents found in the environment. Strangely most of the cases are found in northern Europe in the colder regions, indicating a lack of vitamin D as a major external cause. One of the diseases that fall under the demyelination definition is Multiple Sclerosis, which is essentially damage to myelin. It causes an impairment of sensation, movement, bladder and bowel movement, fatigue, sensory perception and dizziness, depending on the level of damage and the nerves that have been affected.

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