Hair Cells
Hearing loss is most commonly caused by damage to the hair cells in the cochlea located in the inner ear. This is either due to the natural ageing process or other causes, such as exposure to loud noise, disease or infection.
The hair cells transmit sound in the form of nerve impulses to the brain, which interprets them as recognisable sounds.
Damaged hair cells cannot send complete signals to your brain, making speech less distinctive especially in background noise. Speech becomes difficult to follow as words appear to run into one another.
Three main types of hearing loss-
A breakdown or weakening of any part of the hearing system can result in a loss of hearing. The area of weakness or malfunction determines the type of hearing loss: