Otitis is a general term for inflammation or infection of the ear, in both humans and other animals.

It is subdivided into the following:

  • Otitis externa, external otitis, or "swimmer's ear" involves the outer ear and ear canal. In external otitis, the ear hurts when touched or pulled.
  • Otitis media or middle ear infection involves the middle ear. In otitis media, the ear is infected or clogged with fluid behind the ear drum, in the normally air-filled middle-ear space. This very common childhood infection sometimes requires a surgical procedure called "myringotomy and tube insertion".
  • Otitis interna or labyrinthitis involves the inner ear. The inner ear includes sensory organs for balance and hearing. When the inner ear is inflamed, vertigo is a common symptom.
Diseases of the ear and mastoid process (H60–H99, 380–389)
Outer ear
  • Otitis externa
  • Otomycosis
Middle ear and mastoid
  • Otitis media
  • Mastoiditis
    • Bezold's abscess
    • Gradenigo's syndrome
  • Tympanosclerosis
  • Cholesteatoma
  • Perforated eardrum
Inner ear and
central pathways
Common pathway
  • Labyrinthitis/Otitis interna
  • Vertigo/Balance disorder: peripheral
    • Ménière's disease
    • BPPV
    • Vestibular neuronitis
    • Perilymph fistula
  • central (Central positional nystagmus)
Hearing impairment
  • Conductive hearing loss
    • Otosclerosis
    • Superior canal dehiscence
  • Sensorineural hearing loss
    • Presbycusis
    • Cortical deafness
  • Nonsyndromic deafness
Excessive response
  • Tinnitus
  • Hyperacusis/Phonophobia
  • Wolfram syndrome
  • Usher syndrome
  • Auditory processing disorder
  • Spatial hearing loss


anat (e/p)/phys/devp

noco/cong, epon

proc, drug (S2)

Plasma derived mediators Bradykinin · complement (C3, C5a, MAC) · coagulation (Factor XII, Plasmin, Thrombin)
Cell derived mediators preformed: Lysosome granules · vasoactive amines (Histamine, Serotonin)
synthesized on demand: cytokines (IFN-γ, IL-8, TNF-α, IL-1) · eicosanoids (Leukotriene B4, Prostaglandins) · Nitric oxide · Kinins
Chronic Macrophage · Epithelioid cell · Giant cell · Granuloma
Processes Traditional: Rubor · Calor · Tumor · Dolor (pain) · Functio laesa
Modern: Acute-phase reaction/Fever · Vasodilation · Increased vascular permeability · Exudate · Leukocyte extravasation · Chemotaxis
Specific locations
Nervous CNS (Encephalitis, Myelitis) · Meningitis (Arachnoiditis) · PNS (Neuritis) · eye (Dacryoadenitis, Scleritis, Episcleritis, Keratitis, Choroiditis, Retinitis, Chorioretinitis, Blepharitis, Conjunctivitis, Iritis, Uveitis) · ear (Otitis, Labyrinthitis, Mastoiditis)
Cardiovascular Carditis (Endocarditis, Myocarditis, Pericarditis) · Vasculitis (Arteritis, Phlebitis, Capillaritis)
Respiratory upper (Sinusitis, Rhinitis, Pharyngitis, Laryngitis) · lower (Tracheitis, Bronchitis, Bronchiolitis, Pneumonitis, Pleuritis) · Mediastinitis
Digestive mouth (Stomatitis, Gingivitis, Gingivostomatitis, Glossitis, Tonsillitis, Sialadenitis/Parotitis, Cheilitis, Pulpitis, Gnathitis) · tract (Esophagitis, Gastritis, Gastroenteritis, Enteritis, Colitis, Enterocolitis, Duodenitis, Ileitis, Caecitis, Appendicitis, Proctitis) · accessory (Hepatitis, Cholangitis, Cholecystitis, Pancreatitis) · Peritonitis
Integumentary Dermatitis (Folliculitis) · Cellulitis · Hidradenitis

Arthritis · Dermatomyositis · soft tissue (Myositis, Synovitis/Tenosynovitis, Bursitis, Enthesitis, Fasciitis, Capsulitis, Epicondylitis, Tendinitis, Panniculitis)

Osteochondritis: Osteitis (Spondylitis, Periostitis) · Chondritis
Urinary Nephritis (Glomerulonephritis, Pyelonephritis) · Ureteritis · Cystitis · Urethritis

female: Oophoritis · Salpingitis · Endometritis · Parametritis · Cervicitis · Vaginitis · Vulvitis · Mastitis

male: Orchitis · Epididymitis · Prostatitis · Balanitis · Balanoposthitis

pregnancy/newborn: Chorioamnionitis · Omphalitis
Endocrine Insulitis · Hypophysitis · Thyroiditis · Parathyroiditis · Adrenalitis
Lymphatic Lymphangitis · Lymphadenitis

Other articles related to "otitis":

List Of Me SH Codes (C09) - MeSH C09 --- Otorhinolaryngologic Diseases - MeSH C09.218 --- Ear Diseases - MeSH C09.218.705 --- Otitis
... MeSH C09.218.705.496 --- otitis externa MeSH C09.218.705.663 --- otitis media MeSH C09.218.705.663.652 --- mastoiditis MeSH C09.218.705.663.683 --- otitis media with effusion MeSH C09.218 ...
Otitis Interna
... Otitis interna (Internal otitis) is an inflammation of the inner ear and is usually considered synonymous with labyrinthitis ...
List Of ICD-9 Codes 360–389: Diseases Of The Sense Organs
... Diseases of the ear and mastoid process (H60–H99, 380–389) Outer ear Otitis externa Otomycosis Middle ear and mastoid Otitis media Mastoiditis Bezold's abscess Gradenigo's syndrome Tympanosclerosis ...
Otitis Externa - Prognosis
... Otitis externa responds well to treatment, but complications may occur if it is not treated ... are more likely to develop complications, including malignant otitis externa ... Chronic otitis externa Spread of infection to other areas of the body Necrotizing external otitis ...