I’m sorry you’re having weird movements that concern you. Neurological stuff can be so weird. Could the movement you’re experiencing be muscle twitches? I have a rare hereditary neuropathy and one of the issues I have is with fasciculations (muscle twitches). I’ll have at least 50 at a time in my legs and feet and they go on for hours. This is a regular occurrence. I remember when my son was young and I had shorts on he told me it looked like bugs were crawling under my skin. It feels that way too. I also get random twitches on my face when under my eyes, my eyelids and near my mouth, my hands and other places. I remember having eye twitches as a kid. The massive leg twitches started about 40 years ago in my 20s.

There are a lot of people on this platform that talk about benign fasciculation syndrome (BFS). You might want to search for that and read how others describe it. I hope you find answers soon.