David Liew talks to gastroenterologist Varan Perananthan about his article on diagnosis and management of eosinophilic oesophagitis (EoE). Varan explains the causes and symptoms of EoE, why the prevalence has been increasing, and how to differentiate EoE from gastro-oesophageal reflux disease. Also discussed are dietary approaches for identifying food triggers and pharmacological treatments for EoE. Read the full article by Varan and his co-author, Rebecca Burgell, in Australian Prescriber.