Post op hip surgery 34yrs old. Develop skin rash on ankle back bottom foot. Scally fish skin. Itchy. White patches. Red area. Becomeing more wide spread. Never had skin issues until after surgery. Still have post op respiratory infection after doing antibiotics still present as well.
You could be experiencing a fungal infection from being on antibiotics. Let your doctor take a look, especially if it's on the same leg that you had the hip surgery on, just to make sure nothing else is going on.