I had it 2 years ago.
I just want to share my story and hope it helps someone.
I got scabies approximately 2 year ago trying a pair of jeans at a store. Two days later I noticed two very itchy pimples on my knee. A few days later I started waking up around 4am and noticing 2-3 new itchy pimples every night. I thought we had bedbugs. 10 days later going crazy trying to find bug i realized that it's living in my skin. Scabies on my legs looked like watery pimples 1-2 inchesapart. Eventually I got them on my arms and saw lines. I went to a walk in clinic told them my symptoms an since the itch was at night they agreed it's scabies and prescribed Permethrin.
Applying permethrin for the first time was a nightmare. I had some allergic reaction. It didn't work and continued spreading too around 40-50 pimples. I did permethrin again and again. Tried oils and other things that I wouldn't recommend, it's just waste of time.
What worked is applying full body per protocol for 3 rounds, plus applying every other day on affected areas only, plus (important! ) rub it permethrin with a cloth into pimples. I used an old clean cotton sock that I cut in pieces. I never used cloth twice not to spread. Rubbing in made a huge difference. I know it's gone because some itchy spots stop itching in 12 hours and don't come back. You have to apply again in 2-3 days for 3-5 more rounds on spots only to treat eggs and new scabies. When it's gone even really bad spots drying and healing in 4-5 days. If it's not drying and still red, treat it again.
I a scientist, I read about scabies life cycle and believed they can't survive more than 3 days on the surface. From my personal experience, it's not true. I got it a month later on my leg in the area that was clean. I refused to believe for a week it was back, but the itch a barrows were obvious. I used permethrin just for that area rubbing with a cloth. It was gone in 10 days. I got it 3rd time 2 months later. I could've been living in my mattress or blankets even it steamed and washed everything.
It's been almost 2 years scabies free. Mentally I healed, but will never forget. I still have permethrin just in case...
I noticed that Calamine Spray helps with itch and slows the spread. You can use it in between treatments. Don't use oils. They clug up pores and make permethrin less effective.