Suggest Remedy For Persistent Rash On Left Forearm

I HAVE A RASH ON MY LEFT FOREARM. I FIRST NOTICED IT WHEN I WAS TAKING CIPRO FOR AN UNARIARY INFECTION AND BELIEVED IT WAS A REACTION TO THE ANTIBODIC. HOWEVER, AFTER STOPPING TAKING THE ANTIBODIC, IT PERSIST. I HAVE USED A TOPICAL ANTIBODIC TO HEAL THE SORES CAUSED BY THE SCRATCHING. IT IS MOST NOTICABLE WHEN I GO TO BED AT NIGHT AND WHEN I AWAKE IN THE MORNINGS.