Welcome to icliniq.com.
I have gone through your case. Marks could be scratch marks due to dryness, it could be due to scabies for which you have been given Permethrin and it could be a fungal infection for which you have used Clotrimazole cream. Sometimes fungal infection may require six weeks of treatment. And problem arises when the patient leaves treatment halfway considering it is not effective and then it becomes resistant, and require even prolong treatment.
Similarly, itching due to dryness may require prolonged and continuous moisturizing. So, in my opinion, continue to apply Clotrimazole cream 2 to 3 times a day, do not use Onabet (Sertaconazole). Avoid sweating and friction and apply vaseline lotion at night.
For more information consult a dermatologist online --> https://www.icliniq.com/ask-a-doctor-online/dermatologist