I had the same experience. I used two treatments of scabies, 3 days apart, and went to my dermatologist in a panicked frenzy an entire 7 days after I'd put on the last treatment and had had new bumps stil appearing even the night before, crying that it wasn't working and had him scrape the new bumps that were even worse than before and itchy on my hand.
pic He took a scraping, and said he didn't see any scabies mites. I wasn't sleeping and he gave me Hydroxazine, and anti histamine that also makes you sleepy. I shut myself away from everyone in my life, and gradualy the bumps went away with the help of Vaseline Lotion "Reparining Moisture". I feel that a lot of my pain and discomfort came from the dry skin; dry skin caused by the permethrin since it is, after all, a PESTICIDE on your skin. Try it, go to your dermatologist asap and listen to the song "Don't Worry be Happy" by Bobby McFerin and "Up and Up" by Reliant K. I care and hope you get better.