“…Tubal dysfunction appears to occur most commonly from functionally “obstructive disorders” 8 in which the tube is not anatomically blocked, but there is sufficient bulky mucosal disease that dilation does not occur adequately to aerate the middle ear. The etiology of the mucosal disease remains uncertain, but there is increasing evidence that allergic disease, 7,15 LPR, 5,6 adenoid hypertrophy impinging on the posterior cushion, 16 and anatomic factors, 17 may play important roles. Additionally in children, exposure to tobacco smoke, wood and charcoal smoke, short‐term breast feeding, and overcrowded living conditions 18 correlate with a higher incidence of otitis media.…”