Suggest Treatment For A Very Sore Random Itchy Rash

Hello, I was diagnosed with scabies back in November of 2014, used Permethrin cream, washed bedding and clothing on high heat, vacuumed every day and bagged everything else I could. I thought I was cured but I suspect I still might have it. Every couple days or so, I get a random itchy rash and sometimes curved or straight red lines which seem to be raised up and a bit sore. Putting rubbing alcohol or hand sanitizer on them seems to clear them up in a matter of an hour to a couple days. I have photos available if needed for a proper evaluation. I have not spread this to anyone at home or elsewhere to my knowledge. I d really appreciate knowing what exactly is causing this, thanks!