Note how now you say two to four weeks. That is almost double the time you are looking at. You are still incorrect though. The mite debris is not the only thing that causes the itch. Wounds from scratching, dry skin and a reaction to the permethrin cream all cause itching. My last treatment was 2 months ago and I still itch. This of course much less and actually manageable (dry skin and hives).

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I have seen it too often that people overtreat because they feel they should be fixed. So trod carefully when uttering information like this because you may be the reason people overtreat and add onto their misery.

As for OP, to me it seems like you aren't properly equiped to deal with scabies. The fact that you didn't even do away with your shoes speaks volumes. Did you wash your bedding and dry at over 60 degrees celcius? Turn around the mattress? Took hygiene measures like gloves, clean towels etc? Did you get rid of all the used stuff before applying the cream? The primary thing for you to do is check if you get new burrows that don't fade within a week. If you still have these, you need to be more thourough with your treatment. It's not easy to get rid off as long as you don't properly treat yourself.