In addition to otitis media, many ear diseases also have “watery” symptoms. For example, otitis externa can sometimes manifest as “water” in the ear canal and, when accompanied by bacterial infection, as pus. The main difference between otitis media and otitis media is that the former has an intact eardrum and no perforation. In addition, pus can also manifest itself in the form of a boil on the external ear canal or a bacterial infection secondary to a tumor in the external ear canal.