Infectious and parasitic diseases (A00-B99).
- Zoster oticus – cardiac pes zoster (shingles); in herpes zoster oticus, the typical rash is found in the ear canal.
Musculoskeletal system and connective tissue (M00-M99).
- Temporomandibular joint arthropathy (TMJ disorder).
- Cervical neuralgia – primarily in the neck localized pain symptoms.
Neoplasms (C00-D48)
- Carcinoma of the auditory canal
Ears – mastoid process (H60-H95)
- Auditory canal cholesteatoma (synonyms: pearl tumor, onion tumor, otitis media epitympanalis): ingrowth of multilayered keratinizing squamous epithelium into the middle ear with subsequent chronic purulent inflammation (DD in otitis externa maligna).
- Mastoiditis – acute inflammation in the mastoid process (Processus mastoideus) of the temporal bone with bone fusion; this is a complication of acute otitis media.
- Otitis externa circumscripta (auditory canal furuncle).
- Otitis externa diffusa (ear canal eczema).
- Otitis externa necroticans (malignant otitis externa) – necrotizing inflammation of the auditory canal, which spreads to the bone and cranial nerves.
- Otitis media (inflammation of the middle ear).
- Tympanic effusion (synonym: seromucotympanum) – accumulation of fluid in the middle ear (tympanum).
- Perichondritis (inflammation of the cartilaginous membrane).
- Tubal catarrh – is an inflammation of the Eustachi tube (Tuba auditiva, “Eustachian tube”); this usually occurs in the context of an infection of the upper respiratory tract (rhinitis acuta; cold / rhinitis).
Psyche – nervous system (F00-F99; G00-G99).
- Trigeminal neuralgia – form of facial pain; it is an extremely painful irritation of the 5th cranial nerve, the trigeminal nerve.
Injuries, poisoning and other consequences of external causes (S00-T98).
- Foreign body irritation in the ear canal
- Injuries in the area of the ear canal
