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A recent systematic review of treatments of Eustachian tube dysfunction commissioned by the UK NIHR Health Technology Assessment (HTA) Programme revealed that an important limitation with the available evidence is a lack of consensus on the definition and diagnosis of this disorder. 1 The HTA report recommended that key to advancing research in this field is achieving consensus on diagnostic criteria for Eustachian tube dysfunction (to identify eligible patients for future trials) and on important clinical outcomes.

To address this need, an international forum of scientists and physicians with expertise in the field of Eustachian tube disorders met at a workshop in Amsterdam on 21 June 2014 and was tasked to come to an agreement on the definition, clinical presentation and diagnosis of Eustachian tube dysfunction, and areas for future research. This study summarises the outcomes of that meeting.