How long does benign fasciculation syndrome take to go away?

Unknown: Benign fasciculation syndrome (BFS) is an uncommon syndrome while other fasciculations are quite common and can occur in 70% of healthy people. The main cause of BFS is unknown but stress, medications, caffeine, anxiety ,and cigarettes can be causes. A full neurologic exam is needed for diagnosis. Labs and nerve testing should be done. No one can predict how long the syndrome will last