What is the role of corticosteroids in the treatment of myasthenia gravis (MG)?

Updated: Aug 27, 2018
  • Author: Abbas A Jowkar, MBBS; Chief Editor: Nicholas Lorenzo, MD, CPE, MHCM, FAAPL  more...
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Most patients with generalized MG require additional immunomodulating therapy. Immunomodulation can be achieved by various medications, such as commonly used corticosteroids.

The corticosteroid regimen should be tailored according to the patient’s overall improvement. The lowest effective dose should be used on a long-term basis. Because of the delayed onset of effects (3–4 months), steroids are not recommended for routine use in the emergency department (ED). Patients who are taking long-term moderate or high doses of steroids may have suppressed adrenal function and may require stress doses (eg, hydrocortisone 100 mg IV in an adult) during acute exacerbations. [7]

Once patients achieve treatment goals (MMS or remission), the corticosteroid dose should be gradually tapered. In many patients, continuing a low dose of corticosteroids long-term can help to maintain the treatment goal.

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