What Could Cause Intense Itching With A Crawling Sensation, Bruising, And Particles Sticking To Surfaces From Scalp To Feet?

I have very itchy skin from scalp to the bottoms of my feet. In my hair it feels like its moving. Also everywhere else. It leaves bruises and looks so noticable. It makes it hard for me to sit stiil , sleep , be around others as well as focus on anything. It sticks to walls and doors and any fabric