Since I started experimenting with Ivermectin, I am having a visual hallucination of pins or crystals of some kind. They are about an inch and a half long and white. Something is still itching my butt. I want the butt itcht to stop. I am out of garlic. The ivermectin isn't working.n I'm afraid those needle/crystal like things I keep seeing are going to tunr into worms I want them to be dead. Any ideas?