Q: have you an idea what type of roundworm you have, e.g. ascaris, threadworm etc.?
I also have a resistance to ABZ after several full courses and have intermittent activity under my scalp too which is sore and inflamed as well as movements elsewhere in my soft tissues.
I had to stop recently ABZ because the activity worsened and now only taking Ivermectin horse paste, which is supposed to eradicate the adults, but not the eggs/ova. Not sure how that will go, activity has been less though these last two days.