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A 44-year-old member asked:

could anyone tell me about myelin sheath tumors?

1 doctor answer2 doctors weighed in
Dr. Myron Arlen
Surgical Oncology 64 years experience
Insulating sheath: Nerve sheaths are present to assist with nerve conduction. These are termed myelin sheathes. And are made from cells termed Schwann Cells. A tumour can grow from the nerve itself, or more commonly, from the surrounding Schwann Cells. The two most common forms of peripheral nerve tumours are called Schwannoma and Neurofibroma. . The more common Schwannoma and Neurofibroma are collectively referred to as Nerve Sheath Tumours. Most Nerve Sheath Tumours occur spontaneously. In some individuals, the Nerve Sheath Tumours may be part of a syndrome that predisposes to multiple nerve tumors. Such syndromes include neurofibromatosis and multiple schwannomatosis. In someinstances the Schwannoma converts to malignancy.

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A 35-year-old member asked:

What is a myelin sheath do?

2 doctor answers5 doctors weighed in
Dr. Leonard Lado
Psychiatry 32 years experience
Myelin sheath: Myelin is a electrically insulating material that forms a layer, the myelin sheath, usually around only in the part of the cella called the axon it is essential for the proper functioning of the nervous system. The main purpose of a myelin layer (or sheath) is to increase the speed at which impulses propagate between brain cells. Mulitple sclerosis is a disease that affects the myelin sheath.
A 40-year-old member asked:

What's protective myelin?

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Myelin Sheath: Myelin is the protective material that covers the axon of a neuron . The myelin forms a sheath which provides electrical insulation around the axon.
Canada
A female asked:

Does the myelin sheath regenerate itself? If so, how long does it take?

2 doctor answers4 doctors weighed in
Dr. Glenn Messina
Aesthetic Medicine 35 years experience
Myelin can heal: Demyelinating diseases like multiple sclerosis create a situation where the myelin will not heal itself. Traumatized nerves do heal but they only move a few mm a day so it will take time for the nerve ends to meet and repair themselves. The myelin will heal in time at east several months.
A 33-year-old member asked:

How long does myelin sheath take to heal?

1 doctor answer1 doctor weighed in
Dr. Bennett Machanic
Neurology 52 years experience
See below: In peripheral nerves, damage to just the myelin coverings, recovery may take place over 3-4 weeks, but anatomically, the nerve may not fully recover its prior nerve conduction speed. Central nervous system a bit tougher to clarify.

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Last updated Jun 23, 2014

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