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What is tinnitus?
 
Common causes of tinnitus
     
 
-
 Occlusion of ear canals (e.g. earwax or foreign objects)
     
 
-
 Outer or middle ear infection
     
 
-
 Perforation of ear drum
 
 
 
-
 Otosclerosis
     
 
-
 Eustachian tube dysfunction
     
 
-
 Deterioration of hair cells in the inner ear due to prolonged noise exposure
     
 
-
 Degeneration of hair cells due to aging
     
 
-
 Side effects of medication
     
 
-
 Symptom of Meniere¡¦s Disease, Nasopharyngeal Cancer, Hypertension and Diabetes
     
 
-
 Acoustic neuroma (tumor on auditory nerve)
     
 
-
 Stress, pressure and sleep problems
 
Classification
   
 
1.
 Objective tinnitus
     
 
-
 Caused by sounds generated somewhere in the body.
     
 
-
For example, turbulent flow of blood in constricted vessels, spontaneous contractions of middle ear muscles or palatal myoclonus, temporomandibular joint disorders, arteriovenous malformation, glomus tumors or aneurysms, patulous eustachian tube.
     
 
2.
 Subjective tinnitus Listen to noises of tinnitus
     
 
-
 Caused by abnormal activity of the hair cells, auditory nerve, central nervous system (CNS), stress, wax impaction, eardrum perforation, ear infections, otosclerosis, barotraumas, noise exposure, Meniere¡¦s disease, acoustic neuroma, nasopharyngeal pathology or chemotherapy.
     
 
-
 It is also related to medical syndromes like anemia, allergies, diabetes, low blood sugar, migraine or hypertension.
     
 
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 Some cases are idiopathic (without a specific cause).
     
   
 
 
 
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