Hearing loss can be caused by problems in different parts of the ear or the hearing pathway. Problems can be in the outer, middle or inner ear or in the auditory pathway to the brain.
Congenital Hearing Loss is present at or soon after birth.
Acquired Hearing Loss occurs some time later.
Conductive Hearing Loss is often caused by damage or a blockage to the outer or middle ear. Conductive hearing loss is not usually permanent because in many cases it can be medically or surgically treated. Some conditions that cause conductive hearing loss are not treatable so permanent hearing loss can occur.
Sensorineural Hearing Loss results when there is permanent damage or malformation to the sensory part of the ear (the cochlea) or to the neural part of the hearing pathway (the auditory nerve).
Mixed Hearing Loss is a combination of both a conductive and sensorineural hearing loss.
Click here for link to Australian Hearing Website for more information.