eustachian tube dysfunction
presbycusis (sensorineural hearing loss with aging)
otosclerosis - conductive hearing loss
patulous Eustachian tube - also have autophony
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acoustic neuroma - also have deafness
superior canal dehiscence syndrome (SCDS) - rare; pulsatile tinnitus
arterial bruits, AVM's, fistulae - mainly while sleeping; no vertigo/deafness;
head and neck paragangliomas of the carotids - may interfere with hearing
venous hums - eg. hypertension; often change with head position
spasm of the tensor tympani or stapedius muscle - pulsatile tinnitus +/- deafness, aural fullness
myoclonus of the palatal muscles - clicking noises or irregular or rapid pulsations; MS, etc
TMJ dysfunction
cervical spine soft tissue injuries
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drugs (may also have deafness if ototoxic)