a swelling or infection of the middle ear typically correlated with sinusitis, upper respiratory infections, or allergies and facilitating a conductive hearing loss. The acute form occurs typically and often in young kids, stemming from bacterial or viral infections. In serous otitis media, a thick fluid fills the middle ear. In adhesive otitis media, lasting adhesions grow in the middle ear because of the persistent existence of fluid after the infection has been managed. These adhesions inflict injuries to the ossicles.