well ABZ after 4 courses has not had any control over my infection, Ivermectin possibly in a small way but not enough to erradicate it.
that leaves Hetrazan, giving it another go for longer time and the Prazi I have yet to take.
I ordered Profender spot-on but have not received it yet which I shall apply to specific areas affected in the skin.
Profender spot-on is for use externally in veterinary meds for cats. It contains Emodepside and Prazi which when applied to cat's skin at the base of neck, it is then absorbed into the system so I guess it could work topically for humans too with skin invasion, well at least it might work locally before absorbing into the system. Profender is sold in UK so not sure if the US retails it.
your nodules are they sort of white? Good luck with your Ivermectin topical treatments.