(Salem, OR)  --  Salem police are looking for a missing 15-year-old girl who may need medical attention.  Authorities say Bethany Desanto ran away from her foster home on September 19th.  Police say Desanto often wears a long, purple wig, and has been known to hang around transient camps near Portland Road and Hyacinth Street Northeast in Salem.  Bethany is described as white, five-feet-six, weighing 232 pounds, with brown hair and blue eyes.