Upper eyelid retraction disclosed after edrophonium chloride administration in a patient with Graves' orbitopathy and myasthenia gravis

摘要: Patients with Graves’ orbitopathy have a higher probability of myasthenia gravis than does the normal population. Overlapping clinical features cause diagnostic confusion in such situation. We herein report patient and (GO-MG) left eyelid height, but whom upper retraction was shown after edrophonium chloride administration. Upper GO-MG is occasionally masked by effect. The height must be carefully monitored patients to detect presence concomitant gravis.