okay so this is the second time this has happened completely out of the blue....the first time my doctor didnt know what it was but he prescribed zyrtec (i think) and it seemed to help after a few days....okay so here's the problem....i feel an itch but nothings there (there being a random spot; elbow, knee, shin, pinky finger, bottom of my FOOT!) i scratchsaid itch hoping it will go away and the spot turns red and a white bump appears....the itch is persistant and the more i scratch in an area the more bumps apear...bumps ranging from the size of a flea bite bump to the size or a really big mosquitto bite bump...after awhile the bump disappears.....is this an alergy a skin condition....some crazy disease who's sole purpose is to drive me up a wall? plz any advice is welcome