Copyright © Myasthenia Gravis Mid-Atlantic Region. All rights reserved.


    There is no known cure for MG, but there are effective treatments that allow many to lead full

    lives.  Spontaneous improvement and even remission may occur without specific therapy.

Diagnostic Testing

Acetylcholine Receptor Antibody blood test:  an abnormal result means acetylcholine receptor antibody has been detected in your blood.  It confirms the diagnosis of MG.

Anti-musk antibody testing blood test: reveals the presence of acetylcholine receptor OR muscle-specific tyrosine kinase-seropositive (MuSK) antibodies.

Electromyography: repetitive nerve stimulation that shows a pattern of responses that are characteristic of those with MG.

"Tensilon" test:  the drug edrophonium chloride is injected into the vein.  Improvement of strength immediately after injection provides strong support for the diagnosis of MG.

Sometimes all of these tests are negative or equivocal in someone whose story and examination still seem to point to a diagnosis of MG.

  • Myasthenia Gravis comes from the Greek and Latin words meaning "grave muscular weakness".
  • The most common form of MG is a chronic autoimmune neuromuscular disorder that is characterized by fluctuating weakness of the voluntary muscle groups.
  • The prevalence of MG in the Unites States is estimated to be about 20/100,000 population.
  • MG is probably under diagnosed and the prevalence may be higher. It occurs  in all races, both genders and at any age.
  • It does, occasionally, occur in more than one member of the same family.

What is MG?