Filipe,
BFS is a true neurological disorder that is called by many different names. BFS just seems to be a pretty common name. I think it can also be a condition for some as well, but the difference is the presence of changes on emg (fasciculations). Either way, getting the anxiety under control that most of us experience as a part of bfs is critical and should be the first step for anyone suffering from bfs.
Take care,
Gary