Unusual case of recurrent falls: Myasthenia gravis in an elderly patient

摘要

Although myasthenia gravis (MG) is usually thought of as affecting young to middle-aged women, similar to other autoimmune diseases, recent evidence suggests that this might be changing.1–5 In one study, a significant increase in incidence of late-onset MG (P < .05) and decrease in early-onset MG (P < .01) were detected. The median age at onset of the disease steadily increased over time (from 42 years in 1985 to 1990 to 66 years in 2007).1 In another study, 59% of patients who required treatment with pyridostigmine for the first time for MG were 60 years or older and 38% were 70 years or older.2