May be heard by examiner. Less common
Mechanical: Enlarged eustachian tube, palatal myoclonus, stapedial muscle spasm
Vascular: often pulsatile
AVM, aneurysm
Arterial bruits
Carotid stenosis or dissection
AVM, aneurysm
Arterial bruits
Carotid stenosis or dissection
Excessive noise exposure and/or any cause of sensory hearing loss
Otitis media, otomycosis, herpes zoster oticus
Meniere's disease
Labyrinthitis
Head trauma, otic barotrauma, decompression sickness
Hypertension,
TMJ
MS
Acoustic neuroma
Abducens nerve palsy
Leukostasis and hyperleukocytosis
Idiopathic intracranial hypertension
Ototoxicity/medication effect:
Salicylate toxicity:<unk>  is an early symptom
Hydrocarbons
Caffeine toxicity
Oxygen toxicity
NSAIDs
Loop diuretics (furosemide, bumetanide, ethacrynic acid)
Antibiotics: aminoglycosides, erythromycin, vancomycin
Chemotherapeutics: cisplatin, carboplatin, vinblastine, vincristine
Quinine
Fosphenytoin
Bupropion
Salicylate toxicity:<unk>  is an early symptom
Hydrocarbons
Caffeine toxicity
Oxygen toxicity
NSAIDs
Loop diuretics (furosemide, bumetanide, ethacrynic acid)
Antibiotics: aminoglycosides, erythromycin, vancomycin
Chemotherapeutics: cisplatin, carboplatin, vinblastine, vincristine
Quinine
Fosphenytoin
Bupropion
Tinnitus
May be heard by examiner. Less common
Ocular palsy
Mechanical: Enlarged eustachian tube, palatal myoclonus, stapedial muscle spasm
Diplopia
Vascular: often pulsatile
Contact lens problems
AVM, aneurysm