What Causes Painful Bite Marks All Over The Body?

YES, I HAVE BITE MARKS ALL OVER MY BODY THAT ARE PAINFUL. THEY STARTED IN MY SCALP, NOT HAIR, IT HAS BEEN 1 MONTH AND THEY ARE EVERYWHERE. THEY START AS PIN POINT BLACK OR WHITE, CAN T SEE THEM MOVE,EXCEPT ON MY BODY. THEY BORE INTO MY SKIN AND SUCK BLOOD.. AND BLOW UP INTO WHITE SORES. THEY ALSO BORE INTO ANYTHING. WOOD., PLASTIC, ETC WHAT IS GOING ONE.. I HAVE NO ENERGY LEFT. I VE BEEN TO ER 3 TIMES. AND BECAUSE I HAVE DEPRESSION THEY JUST LOOK AT ME...