Dr. Horner is a member of the Division of Allergy, Immunology and Pulmonary Medicine. She received her undergraduate degree in chemistry from Washington University. She received her medical degree from and completed a residency in Internal Medicine and Pediatrics at St. Louis University. She completed her Allergy/Immunology fellowship at the University of Texas Medical Branch in Galveston, TX. She joined the faculty of Washington University in 2006. She is board certified in Pediatrics, Internal Medicine, and Allergy and Clinical Immunology. She is a member of several organizations including the American Academy of Allergy, Asthma, & Immunology (AAAAI). Dr. Horner’s research interests include childhood asthma. She is currently conducting a study on the association of stress and nocturnal asthma symptoms in children with support from the AAAAI Gail G. Shapiro Clinical Faculty Award. She is also involved with research efforts through AsthmaNet, a multi-center network examining therapeutic approaches to asthma.