Ocular myasthenia gravis in a patient with euthyroid Graves' disease

Graves' disease (GD) and ocular myasthenia gravis (OMG) are autoimmune disorders which may occur in the same patient. Myasthenia gravis is 50 times more common in patients with Graves' disease when compared to the normal population. Typically, a patient may be diagnosed with one disorder and have no signs or symptoms of the other, including negative laboratory studies. Therefore, when managing patients with known Graves' disease, it is important to be alert to the possibility of ocular myasthenia.