Hello,
According to American osteopathic college of dermatology, it is usual for itching and rash to continue for as long as two to four weeks after treatment of scabies. Hence a second application a week later is often advised. In some cases, repeat applications weekly are needed until cured.
I hope it helps. Take care and God bless.
I wish I knew this as well. I used the prescribed permethrin 6 days ago and have seen no difference in my symptoms.