Term Name:	eustachian tube disease
Synonyms:
Definition:	A non-suppurative otitis media and eustachian tube disorder in which the tube is either too narrow or too wide. It can also be caused by nasal inflammation which leads to inflammatory swelling and obstruction of the eustachian tube, which, in turn, leads to increased negative pressure in the middle ear and improper ventilation.
Ontology:	Human Disease [DOID:9739]   ( DOID:9739 )