Why do I wake up covered in scratches and bruises?

So, Over the past few nights, if not couple of weeks. i have noticed when i wake up, I have scratches, cuts and bruises. Not big cuts, Just as though a nail has been gouged into me and dragged along like a REALLY rough scratch.

Am i doing it to myself? The bruises honestly look like maybe im punching myself in my sleep or some shit, I don't know.

Is it possible that whilst im sleeping, I am scratching myself until i bleed and hitting myself till i bruise?
Is it normal or a medical condition or something?

(Btw. I live on my own floor in my in my house, So it would be impossible this is any form of domestic violence or anything)
Why do I wake up covered in scratches and bruises?
Post Opinion