A very common condition involving inflammation of the middle ear and can be classified as either acute otitis media (AOM), or otitis media with effusion (OME) which is a chronic disease. It most commonly affects infants and young children but can affect all age groups. Symptoms of AOM include earache, decreased hearing, fever, unsteadiness, and occasionally liquid discharge if the eardrum bursts. Symptoms of OME include decreased hearing, tinnitus and unsteadiness, but OME can be entirely without symptoms. Effusions (discharges) continue for several weeks after AOM; only 60% of ears with AOM are clear at 2 weeks and 80% are clear by 8 weeks.