CHICAGO - Parents who paid $285 for an experimental head lice treatment for their children might be scratching their own heads, now that the doctor selling the stuff says it‘s really a skin cleanser available for under $10 a bottle at drug stores nationwide. And as of this weekend, his Web site still said the costly treatment was only available at his Menlo Park, Calif., office. The letter "kind of blows the cover," said University of Minnesota medical ethicist Dr. Jeffrey Kahn, who called Pearlman‘s failure until now to disclose his product‘s true identity ethically troubling. Leonard Fleck, a Michigan...