Cocaine cut with the veterinary drug levamisole could be the culprit in a flurry of flesh-eating disease [2] in New York and Los Angeles.The drug, used to deworm cattle, pigs and sheep, can rot the skin off noses, ears and cheeks. And over 80 percent of the country's coke supply contains it."It's probably quite a big problem, and we just don't know yet how big a problem it really is," said Dr. Noah Craft, a dermatologist with Los Angeles Biomedical Research Institute.In a case study in the Journal of the American Academy of Dermatology, Craft describes six cocaine users recently plagued by the dark purple patches of dying flesh. And while they happened to hail from the country's coastlines, the problem is national."It's important for people to know it's not just in New York and L.A. It's in the cocaine supply of the entire U.S.," Craft sai