Losing awareness and feeling

I don't know what to call it and how to explain it, but maybe something like a reversed all day awareness, i just randomly forget about what I'm doing and lose the feelings of that part of the body, this started to happen just for a few days ago.

An example is, I can scratch myself on the back and lose the feeling in my arm, and it feels as someone else is scratching my back. This happens very often now, I don't have school for 2 weeks so my sleep pattern has changed.

Has anyone experienced this? And is it just cause I've changed my sleep pattern and whatnot?

Imagine masturb... Ok just kidding :D I haven't heard anything like it. Are you saying that this happens to you when you're awake? If it was, what makes you think that it can be linked with your sleep pattern?

If you are smoking pot or spice that would explain it. I don't think it would be very mysterious then.