Dr. Anjum Usman, of Naperville, has been a star in the world of alternative treatments for autism for years, but now she's facing professional discipline for her approach to the frustrating disorder. In prescribing chelation, a hormone modulator and hyperbaric oxygen therapy, Usman subjected a young Chicago boy to unproven treatments and demonstrated "extreme departure from rational medical judgment," a complaint filed this week by the Illinois Department of Financial and Professional Regulation states. Listing those treatments, along with dozens of dietary supplements and other therapies, the state said that "none has ? been proven to influence the course of autism." Many of these treatments are extolled in online forums and at conferences like Autism One, held in the Chicago area each spring. Lured by testimonials professing miraculous recoveries, desperate parents of children with autism spend thousands of dollars on them despite a lack of evidence and in spite of known risks. The complaint, which alleges that Usman "engaged in a pattern of practice or other behavior that demonstrate incapacity or incompetence to practice," asks that Usman's medical license be revoked, suspended, placed on probation or otherwise disciplined.