Epidemiology
In the U.S., the prevalence of MMN is approximately 1 to 2 per 100,000, and the disease can mimic the early symptoms of amyotrophic lateral sclerosis (ALS, also known as Lou Gehrig’s disease), although it only has a third of the prevalence of ALS.3,8,9,10
First symptoms appear before the age of 50 in almost 80% of patients, with the mean age of onset at 40 years (range 20 to 70 years).3 Men are 2.7 times more likely to be affected by MMN than women.6