I feel as if there are little stickers under my skin every where....it itches everywhere. what can this be?

Unclear: I'm not sure what you mean by "little stickers." you probably need to see your dermatologist or allergist for a thorough history and exam.

Depends entirely...: ...On what is causing it. Could be an allergic reaction, or a viral, bacterial, or fungal infection, or a drug reaction, or other things. No way to know the best treatment until you know the cause. See a dermatologist.