What are the Symptoms of Multifocal Motor Neuropathy?

By  ,  Onlymyhealth editorial team
Jan 14, 2013

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Quick Bites

  • In MMN, antibodies are created that damage a part of the body.
  • It is an autoimmune disease that affects the myelin sheath.
  • This damage causes weakness in the muscles.
  • The weakness varies from one part of the body to the other.

Multifocal motor neuropathy is a rare autoimmune disorder that develops when the immune system over actively creates antibodies that attack healthy cells and cause damage to a particular part of the body.

In the case of multifocal motor neuropathy, the myelin sheath of the motor nerves gets attacked. Myelin sheath, for those of you who do not know, is a protective layer that covers the nerves. This protective layer is responsible for sending nerve signals from the spine to the different muscles of the body. When the immune system launches an attack on the myelin sheath, the patient suffers from bouts of weakness.

Multifocal Motor Neuropathy

Symptoms of MMN

One of the prominent symptoms of MMN is weakness. This wearkness usually begins in one limb, such as the ankle or the hand and varies from one side of the body to the other. It may interfere with and also make daily activities such as holding things, eating, writing, walking, etc. difficult and sometimes, nearly impossible. Some other symptoms include muscle wasting, twitching and cramping.


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