a few weeks ago I went to the doctor because I was having itchy skin. The doctor said that I didn't have scabies but prescribed the 5% perethium cream to apply to some red bumps on my body. Just to be careful I applied it to my entire body from the neck down. Since the application about 2 weeks ago I have been itch free and seem to really not have scabies. Today I woke up and there was a red thin scratch line about 6inches long on my bicep and another smaller one in my by my collarbone. They red lines do not itch but what are they? can someone help me?