Ascariasis and acute otitis media.

Ascaris lumbricoides has rarely been implicated in the causation of middle ear disease. An infant who developed acute suppurative otitis media while on antibiotics for an upper respiratory tract infection and who extruded an ascaris worm from the ear is presented. The otitis media subsequently resolved. Our understanding of the pathophysiology of ascariasis in the eustachian tube and middle ear is discussed.