I've been following this for a while, so thanks for the link to recent material. I agree that "twitching" is used very loosely on the video, though maybe some of the affected people are having fasciculations. Here, of course, we talk about fasciculations even though we use words like "twitch" or "spasm" to describe them. After all, this is AboutBFS, and it's quite certain that we are not as a group suffering from mass-psychogenic illness or PANDAS. I'm quite a bit older than the adults shown in the video, and have had BFS almost as long as some of the girls have been alive. But this is a fascinating situation. Has AboutBFS ever had a member whose BFS was treated successfully with antibiotics and/or steroids?