Myasthenia gravis is caused by a loss of the myelin sheath around a nerve.

Name: Myasthenia gravis is caused by a loss of the myelin sheath around a nerve.
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Myasthenia gravis is actually caused by a breakdown in communication between nerves and muscles, not by a loss of the myelin sheath. This breakdown is often due to an autoimmune response that attacks the receptors on muscle cells that normally receive signals from nerves.

Myasthenia Gravis Is Caused by a Loss of the Myelin