What Causes Tingling Sensation In The Hands And Fingers?

Ok so idk how to really explain these symptoms I m feeling, but I ll do my best. So off and on between long periods of time, I ll get these weird sensations throughout my body, light tingly sensations that move around from my hands and fingers, to my feet and toes, to my face, arms and legs, now these tingly sensations are not constant, they come and go, also I feel like my brain can t shut down and makes it hard to fall asleep, also and this is the weirdest sensation, but if hold my hands together, just simply place my hand on my arm or leg, or I rub my arm, my face, my chest or any where on my body it seems to feel like my hands not there like my brain isn t registering that s what I m doing, and yes I do feel the touch as in if I was to poke that area, and i also start having anxiety.