by Blizna on April 9th, 2009, 2:18 am
Angst is right. Actually, the last research proved that the figure is about 13% but NOT WIDESPREAD. Not even one patient had fasciculations in more than one muscle group,i.e. innervated from the same anterion horn cell. Actually, the twitching is present during weakening as the muscle loses its innervation and if the weakness cant be detected (altough its present in its minimal form) patient really thinks he only twitch.
About the timespan - every month decreases the chance of getting ALS by 10% and it stops on 99% of course. After one year, there are only few cases described in almost 150 yrs history of ALS.