IL13 and eosinophilic esophagitis: There is an increasing body of evidence that suggests that EoE is driven by food and aero‐allergen exposure,3, 4, 5 resulting in the activation of interleukins (IL)‐5, IL‐13 and IL‐33, subsequently promoting eosinophil migration into and activation in the oesophagus, ultimately leading to oesophageal remodelling.4, 6, 7