EILO is typically caused by a narrowing of the supra-glottic structures of the larynx. In severe cases, these structures, also called arytenoids, can close over to almost completely close the<unk>  inlet. In fewer cases, the glottic (i.e. vocal cord) structures close together and this is typically what happens during<unk><unk>  vocal-cord dysfunction. EILO develops during intense<unk>  and closure develops as<unk>  becomes more intense. Closure of the voice box during<unk>  causes increased 'loading' on the breathing system and the respiratory muscles have to work much harder.
Exercise-induced laryngeal obstruction
Laryngopharyngeal reflux
Odontoma dysphagia syndrome
Esophageal motility disorder
Retropharyngeal abscess
Subglottic stenosis
Parapharyngeal abscess
Esophageal food bolus obstruction