and electromyography (EMG).

Another step in diagnosing BFS is checking for clinical weakness or wasting, which are found in more serious conditions. Lack of clinical weakness along with normal EMG results (in those with only fasciculations) largely eliminates more serious disorders from potential diagnosis. In younger people with only lower motor neuron (LMN) fasciculations, no muscle weakness, and no thyroid abnormalities, Turner and Talbot (2013) state