What Causes Itchy Scalp And Skin?

Hi I am taking oxazepam as I have had trouble sleeping since I got out of hospital a few weeks ago



After I got out of hosptial I have has a real itchy scalp and skin, sporadic red spot like tiny flea bites and they make the surrounding area incredibly itchy especially when hot... I have no lumps around my neck but my neck and nape is very itchy... I have done the lice thing 5 times and this i have not seen anything anyway... I have done the Lycera 3 times and I have not found any evidence there either.. I am still taking the oxazepam and was thinking of taking the phernergon at night which will help with itch and help me sleep, can you think of anything else it might be that I have not tried... I have had a pest guy out there are no bedbugs and no mites or anything in the house, I have sprayed bug spray and eucalyptus spray under my desk at work incase of mites ... thinking of getting a dust buster for work so that I can be sure it is not dusty as I have chronic asthma at times that is why I was in hospital took a 10 day course of predisone finished about 2 wks ago



Any ideas thanks