Thanks selfy and perzephone, that was really useful
and yes cantstop (I did put your name/nickname then but I know you don't sign by it much so I thought I'd better check if you mind me using it??), it can be a good thing they itch/tingle, it does remind me I don't have to do it... but I also get depressed because I DID do it and I have proof of it and I'm ashamed.