I thought I had scabies for nearly a decade. It was well under control by me, without a doctor's help. A year ago I developed a cyst-like lesion on my right ear all around the rim of the auricle above the lobe. It eventually hardened and in places had spiny bone-like material growing out of it. I eventually tried to remove it physically and ended up losing the better part of the lobe. The "cyst" then moved to the conch and grew into a larger cyst. It is horrendous and has started to develop in exactly the same way on my other ear. I am beginning to think it was never arthropod, but helminth. I'm taking ivermectin everyday but there is no improvement. Do you think I should try fenben?