My wife 53 female, having t2dm since last 3yrs, ostoartheritis knee, she has recent problem of rashes mostly at nights, lot of swelling /red patches lot of icthes/skin turns red on scratchings only help is levocitrizine tab, but how long we have to be dependant on this please suggest some remedial steps and medicines, I have tried with black pepper powder with warm cow ghee 1 tsf when hot, but no help. Thanks for advise