1: Tinnitus Flashcards
Define tinnitus
presence of sound in absence of external auditory stimulus
How is tinnitus classified
primary or secondary
What is primary tinnitus
no identifiable underlying cause
What is primary tinnitus usually associated with
SNHL
What is secondary tinnitus
underlying cause can be identified
How is secondary tinnitus classified
- Subjective
2. Objective
What is objective tinnitus
Other individuals are able to hear it - usually a sound made by the body
What is subjective tinnitus
Only individual can hear it
what are 4 causes of objective tinnitus
- Vascular
- Myoclonus stapedius
- High-output cardiac state
- Patent eustachian tube
what vascular disorder may lead to vascular objective tinnitus
AV Malformation
what high-output cardiac states may result in objective tinnitus
Paget’s
Hyperthyroidism
Anaemia
explain stapedius as cause of objective tinnitus
Myoclonus of the stapedius can result in an audible clicking
explain patent Eustachian tube
If eustachian tube remains patent for long periods it can cause abnormal sounds to transmit to the ear
what are the otological causes of tinnitus with SNHL
- Meniere’s
- Presbycusis
what are the otological causes of tinnitus with conductive hearing loss
- Otosclerosis
- Otitis media w/effusion
- Cerumen impaction