ItchinG to sLeep!

Man, these few days made me pissed off real hard! Its funny when it suddenly itch all over the body when I'm goin to sleep. Pretty much it keep me awake the whole night scratching myself~ ARGHHHH!!!!!!

The worst thing is it made me daMN sleepy in the mornin~ I caN't eveN focus in class anymore. I thought it was my bed, then I just changed the bedding recently, so it can't be it. PLiz, sumone have any idea what's causing this?? I'm dyin to sleep!!!!