Demyelination

Loss of the myelin sheath of a nerve.

Destruction of the myelin.

The destruction of the myelin sheath round nerve fibres, caused, e.g. by injury to the head, or as the main result of multiple sclerosis.

Process of destruction or removal of the myelin covering of some nerve fibers, resulting in their impaired function; it occurs in multiple sclerosis and some other disorders.

Breakdown of the fatty sheaths that surround and insulate nerve cells.

A disease process selectively damaging the myelin sheaths in the central or peripheral nervous system. This in turn affects the function of the nerve fibers, which the myelin normally supports. Demyelination may be the primary disorder, as in multiple sclerosis, or it may occur after head injury or strokes.

Destruction of the fatty myelin sheath around nerve fibres which interferes with the nerve function. It can occur after injury to the nerve, but is particularly associated with multiple sclerosis.

Destruction or removal of the myelin sheath of nerve tissue, seen in Guillain-Barre syndrome, multiple sclerosis, and many other neurological diseases.

A loss of myelin in the white matter of the central nervous system (brain, optic nerves, and spinal cord).

The disruption or destruction of the protective myelin sheath, leaving the nerve exposed and vulnerable. This condition leads to a reduction or cessation of impulses that normally travel along the affected nerve, resulting in a slowdown or complete halt of nerve signal transmission.

Demyelination refers to the breakdown of the protective fatty coverings surrounding nerve fibers, known as sheaths. These sheaths play a crucial role in nourishing the nerve fibers and facilitating the transmission of electrical impulses along them. When demyelination occurs, it disrupts the proper functioning of the nerves, resulting in the loss of sensation, coordination, and strength in specific regions of the body. The affected nerves can be located within the central nervous system (CNS), encompassing the brain and spinal cord, or they may be part of the peripheral nervous system, which connects the CNS to sensory receptors, muscles, glands, and other organs throughout the body.

On MRI scans of the brain, individuals with multiple sclerosis (MS) exhibit visible patches of demyelination. MS is a disease characterized by symptoms such as blurred vision, muscle weakness, and loss of coordination. The cause of demyelination in MS remains unknown. In many cases of this disease, episodes of demyelination alternate with periods of partial or complete recovery of nerve function.

Encephalomyelitis, a rare disorder, involves inflammation of nerve cells within the central nervous system (CNS), and occasionally, the presence of demyelinated areas along the nerves.