Sudden loss of hearing
Sudden hearing loss is hearing loss that occurs abruptly or over a period of a few days. It usually affects only one ear, but can affect both.

Sometimes, sudden hearing loss may be accoumpanied by ringing in the ear or dizziness.
Through the causes of sudden hearing loss aren’t always serious, the condition requires immediate medical attention.

Possible causes include:
 Blockage of the ear canal due to buildup of earwax
 A viral infection of the inner ear
 Excess fluid in the middle ear due to changes in air pressure or having a cold, which can cause the tube that lets air into the middle ear (eustachian tube) to malfunction
 Disruption of blood flow to the inner ear, possible due to a head injury or accumulation of fatty deposits called plaques
 A torn membrane withing part of the inner ear
 An acoustic nerve tumor
 An autoimmune inflammatory process

Although sudden hearing loss can be distressing and scary, complete recovery is often seen and with medical treatment many people are able to regain their former level of hearing. However, some show no improvement or regain only partial hearing in the affected ear.