Extreme agitation and fidgetting

[Mashley]

Hi guys,

I've been having these episodes a few times recently and it's really affecting my studies.

It occurs whenever I am deeply concentrating on something, usually writing essays, I start needing to fidget like crazy, I have to make my legs bounce up and down super fast and my stomach starts tightening up to the point where it feels like it's going to rip. I can't concentrate at all and I get an over whelming urge to just run or throw everything across the room or jump out the window!!

I also imagine ripping out my stomach with my hands or stabbing myself to make it stop.

I've researched online but I can't find any info on it. It doesn't feel like panic at anxiety, it's incredibly physical and unbearable!

Does anyone have any idea what it might be?

Thanks in advance!