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The pathophysiology of mastoiditis is straightforward: bacteria spread from the middle ear to the mastoid air cells, where the inflammation causes damage to the bony structures. Streptococcus pneumoniae , Streptococcus pyogenes , Staphylococcus aureus , Haemophilus influenzae , and Moraxella catarrhalis are the most common organisms recovered ...
Endolymphatic hydrops is a disorder of the inner ear. It consists of an excessive build-up of the endolymph fluid, which fills the hearing and balance structures of the inner ear. Endolymph fluid, which is partly regulated by the endolymph sac, flows through the inner ear and is critical to the function of all sensory cells in the inner ear.
Cochlear hydrops preferentially affects the apex of the cochlea where low-frequency sounds are interpreted. Due to the fluid imbalance in this area, parts of the cochlea are stretched or under more tension than usual, which can lead to distortions of sound, changes in pitch perception, or hearing loss, all usually in the low frequencies.
If you have experienced noise-induced hearing loss, there is, unfortunately, no medical treatment to reverse the damage. However, you can prevent further damage by using hearing protection and ...
This type of presentation was common prior to development of antibiotic treatments, and is now a rare complication. [citation needed] In persons with longstanding ear infection and typical symptoms, medical imaging such as CT or MRI of the head may show changes that confirm disease involvement of the petrous apex of temporal bone. [citation needed]
MRI and CT scans can be useful to identify the pathology of many causes of hearing loss. Hearing loss is categorized by severity, type, and configuration. Furthermore, a hearing loss may exist in only one ear (unilateral) or in both ears (bilateral). Hearing loss can be temporary or permanent, sudden or progressive.
Hearing loss, pain: Complications: Expansion of ear canal, facial nerve damage [1] Differential diagnosis: Impacted wax, external ear canal cholesteatoma [1] Treatment: Initial removal of keratin plug; other measures as required [1] Frequency: 4 to 5 per 1000 new otological cases [1]
Recruitment, in medicine, is a physical condition of the inner ear that leads to reduced tolerance of loudness. It commonly occurs in individuals who suffer hearing loss due to cochlear damage. While low-magnitude sounds cannot be heard in the affected ear(s), the perceived loudness increases over-proportionally with sound volume once the ...