Tinnitus
WikiDoc Resources for Tinnitus |
Articles |
---|
Most recent articles on Tinnitus |
Media |
Evidence Based Medicine |
Clinical Trials |
Ongoing Trials on Tinnitus at Clinical Trials.gov Clinical Trials on Tinnitus at Google
|
Guidelines / Policies / Govt |
US National Guidelines Clearinghouse on Tinnitus
|
Books |
News |
Commentary |
Definitions |
Patient Resources / Community |
Directions to Hospitals Treating Tinnitus Risk calculators and risk factors for Tinnitus
|
Healthcare Provider Resources |
Causes & Risk Factors for Tinnitus |
Continuing Medical Education (CME) |
International |
|
Business |
Experimental / Informatics |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Kiran Singh, M.D. [2]
Overview
Tinnitus (IPA pronunciation: Template:IPA or Template:IPA,[1] from the Latin word for "ringing"[2]) is the perception of sound in the human ear in the absence of corresponding external sound(s).
Pathophysiology
Causes of subjective tinnitus
Tinnitus can have many different causes, but most commonly results from otologic disorders - the same conditions that cause hearing loss. The most common cause is noise-induced hearing loss, resulting from exposure to excessive or loud noises. Ototoxic drugs can cause tinnitus either secondary to hearing loss or without hearing loss, and may increase the damage done by exposure to loud noise, even at doses that are not in themselves ototoxic.[3]
Life Threatening Causes
Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.
Common Causes
Causes by Organ System
Complete Differential Diagnosis of Tinnitus
- Acoustic neuroma
- Acute or chronic otitis media
- Alcohol
- Aminoglycosides
- Anemia
- Antidepressants
- Anxiety
- Arterial bruits
- Abberant carotid artery
- Carotid stenosis
- Persistant stapedial artery
- Arteriovenous malformation
- Aspirin
- AV shunts
- Bruxism
- Cardiac arrhythmias
- Cerumen
- Cervival osteochondrosis
- Depression
- Diabetes mellitus
- Diuretics
- Drugs- Artemether and lumefantrin, Flurbiprofen, Piroxicam
- Epilepsy
- Eustation tube dysfunction
- External auditory canal obstruction
- Faulty jaw position
- Foreign body against tympanic membrane
- Glomus tympanicum
- Hallucinations
- Heavy metals
- Heavy smoking
- High jugular bulb
- Hypertension
- Hyperthyroidism
- Hypertension
- Hypothyroidism
- Indomethacin
- Inner ear disease
- Meniere Disease
- Meningitis
- Middle ear disease
- Multiple Sclerosis
- Nasopharyngeal carcinoma
- Noise induced hearing loss
- Omeprazole
- Otosclerosis
- Palatial myoclonus
- Pregnancy
- Presbycusis (age related hearing loss)
- Pseudotumor cerebri
- Quinine
- Sorafenib
- Stapedius spasm
- Tooth abnormalities
- Tooth extractions
- Temporal lobe tumor
- Venous hums
- Vitamin A deficency
- Vitamin B deficency
Diagnosis
Symptoms
Prevention
Tinnitus and hearing loss can be permanent conditions, thus, precautionary measures are advisable. If a ringing in the ears is audible after exposure to a loud environment, such as a rock concert or a work place, it means that damage has been done. Prolonged exposure to noise levels as low as 70 dB can result in damage to hearing (see noise health effects). If it is not possible to limit exposure, earplugs or ear defenders should be worn. For musicians and DJs, special musicians' earplugs can lower the volume of the music without distorting the sound and can prevent tinnitus from developing in later years.
It is also important to check medications for potential ototoxicity. Ototoxicity can be cumulative between medications, or can greatly increase the damage done by noise. If ototoxic medications must be administered, close attention by the physician to prescription details, such as dose and dosage interval, can reduce the damage done.[4]