Eustachian tube dysfunction presents in two clinically opposite forms that share some overlapping symptoms but have entirely different underlying mechanisms and require different management. Obstructive Eustachian tube dysfunction is the more common presentation - the tube fails to open normally during swallowing, yawning, or jaw movement, which means the middle ear cannot equalise pressure with the atmosphere. The result is negative middle ear pressure, ear fullness, muffled hearing, and in chronic cases, accumulation of fluid in the middle ear (otitis media with effusion, or 'glue ear'). Patulous Eustachian tube dysfunction is the opposite - the tube stays abnormally open rather than closing at rest. Patients with patulous ET dysfunction experience autophony, which is hearing their own voice and breathing with abnormal loudness and resonance inside their ear, a sensation often described as echoing or reverberating, and which is both distressing and disorienting. The diagnosis is confirmed by specific tests including tympanometry and endoscopic nasopharyngeal assessment. Treatment for obstructive ET dysfunction focuses on reducing mucosal inflammation through nasal steroids and allergy management, with balloon Eustachian tuboplasty or grommets for refractory cases. Treatment for patulous ET dysfunction is completely different - focused on increasing Eustachian tube mucosal bulk or resistance - and the distinction between the two must be made before any treatment is initiated.
Written by Dr. Rajendran Dinesh Kumar, MBBS, MS ENT, AASC (Allergy Asthma Specialist Course), FAAP, Consultant ENT Specialist and Allergy, Asthma Specialist, Trustwell Hospitals Pvt. Ltd., JC Road, Vinobha Nagar, Sudhama Nagar, Bengaluru, Karnataka 560002. 16+ years, 20,000+ patients. Phone: 9620928650.
