Otitis

Inflammations of the middle ear can occur acutely or chronically.

Acute middle ear inflammation is an infection of the [[mucosa] of the inner ear, caused primarily by the Eustachian tube from the nasopharyngeal cavity by viruses, haemolytic streptococci, staphylococci, Haemophilus influenzae or pneumococci.

Treatment is usually antibiotic and with decongestant nasal drops, α sympathomimetics (e.g. xylometazoline) to restore ventilation and thus pressure equalisation via the Eustachian tube.

In chronic middle ear inflammation, only the mucous membrane or the underlying bone can be affected.

https://de.wikipedia.org/wiki/Akute_Medium ear infection _{(Wikipedia CC-by-sa-3.0)}

https://de.wikipedia.org/wiki/Chronische_Medium ear infection _{(Wikipedia CC-by-sa-3.0)}