Incessant scratching and apart from scratching myself to bleed (during sleep and sometimes not) I have no visible signs. This is not psychosematic as I am either itching and scratching or I am not. It seems to be greatly exacerbated by extended exposure to the sun but I have also experienced it in the winter in London therefore presume it might be temperature related. Is this brachiordial pruritus and could omalizumab help. No doctors either know or are interested - blood tests all normal and that the best they can come up with. HELP!