Hiya, prescribed Bisoprolol. A beta blocker for my blood pressure, I have stage 4 kidney failure. Took medication for 13 days before developing rash on forearms and thighs. Rash on arms tiny very red raised spots with few wheels which are very itchy. GP says allergic reaction, stopped medication 3 days ago but rash has not changed. Have not changed any washing items or creams ect.