Amyotrophic lateral sclerosis (Lou Gehrig's disease) is caused by electric currents applied to or induced in the body: it is an iatrogenic disease of athletes caused by use of electrotherapy devices.

摘要

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease after the famous New York Yankee baseball player, is a rare condition, characterized by deterioration of both upper and lower motor neurons. It has in incidence of about 2.4 per 100,000 population per year with peak onset between 55 and 75 years of age and an average survivorship of 3 years after onset [1]. Over 90% of ALS cases are sporadic, with familial cases making up the balance. An ALS variant which is clinically different from sporadic ALS is present in the Western Pacific and is associated with symptoms and pathological characteristics of both Parkinson's disease and Alzheimer's disease.