is there something in your house or car that might be reinfecting/infesting you?The derm thought it was der matitis. Haven't used permeth for that reason and bc would be afraid to w so many open sores. A decade ago had this (or some mite) and tried permeth many times w no effect. What cured that time was 10% sulfer and iver for a couple months. That didn't work this time.
I think it's time to use the permethrin.:) If you are scratching alot, take some benydryl. Am not sure the open sores will get inflamed by the permethrin --maybe a tiny dab of petroleum jelly could help there, just a thought. Let's see what works best. God bless you too.