I Was In Hospital For A Bad Tooth Cleared With

I was in hospital for a bad tooth cleared with antibiotics but now my entire bosh is itching all the time. I was given elcon lotion as I also have lupus MS and behcets, asthma and rosacea is there any solutions to stopping the itches ? I do have bad allergies but I can't imagine that being the reason there is only redness on heat rubbing type of areas.