On the Mayo Clinic Radio podcast, Dr. Martha Hartz, the division chair of Pediatric Allergy and Immunology in the Mayo Clinic Children's Center, discusses treatment of pediatric asthma and allergies. Also on the podcast, Dr. Rachel Lynch, a pediatrician at Mayo Clinic, discusses attention deficit hyperactivity disorder (ADHD) in children. And Dr. Craig Sawchuk, a psychologist at Mayo Clinic, explains why hoarding disorder is difficult to treat.