3 Weeks Ago, I Had Knee Surgery (arthroscopic). It Was

3 weeks ago, I had knee surgery (arthroscopic). it was routine. The doctor just cleaned it out. For the last 2 weeks I have been wearing a neoprene brace. Yesterday I developed a rash on my leg ( from knee down to ankle) . I have been putting anti itch cream on the area. The rash is only on the leg operated on. Why have I developed the rash? Is this serious?


Should I contact my doctor?