Restless agitation

I don't know if I am using the correct words to describe how I am feeling. It is a really horrible feeling. I can't stay still. If I try to stay still, especially if I want to go to sleep, my feet and legs buzz with energy and it is unbearable. I try rocking, shaking or otherwise moving my legs, but it is not enough and I need to get up and move around.

Usually I am very tired and want to go to sleep, but I can't because of this feeling. I would do anything to get rid of the feeling so I can go to sleep. But I don't know how. Moving around is only a temporary solution, as it comes back as soon as I stop moving. It is so frustrating.

I have violent thoughts of physically hurting myself in many different ways - just to make this feeling go away. I haven't done any of those things yet, but the feelings get unbearable & I worry that I might try.

I think that I get these feelings more when I change medication dosage, especially if dramatic increase. And anxiety/stress also likely to make feelinh worse. But sometimes these feelings come out-of-the-blue with no obvious trigger.

Because of these feelings I can pace around and can't stay still. Which in some places is seen as inappropriate. I also seem more easily upset, and less rational. Which again can get me in trouble. I do my best to stay calm and "behave" in the way others want me to, but it can be very difficult to sometimes.

Does anyone else have feelings like this? How do you describe to others what it feels like? Do you have any strategies to help calm these feelings?