Myasthenia Gravis Diagnosis

How will your doctor diagnose you with this condition? Learn about the tests, exams, processes, and other information relating to the diagnosis of Myasthenia Gravis below.

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How to Diagnose Myasthenia Gravis


Your doctor will ask about your symptoms and medical history. A physical exam will be done. You may need to see a neurologist. This type of doctor is an expert in diseases of the nervous system.

Tests may include the following:

  • Blood tests-to identify the presence of abnormal antibodies and to look for thyroid disease (more common in patients with MG)
  • Electromyography (EMG) tests-to reveal abnormalities in muscle functioning
  • Repetitive nerve stimulation-may show progressively increasing muscle weakness over the course of the test
  • Tensilon test-a dose of a medication called edrophonium chloride is given, which will briefly improve muscle weakness
  • CT or MRI scan of the chest-to look for a tumor of the thymus gland (thymoma)
  • Pulmonary function testing -to assess how MG may be affecting your ability to breathe


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Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright ©2014 EBSCO Publishing All rights reserved. Source: EBSCO